diff --git a/static/admin/css/vpn_admin.css b/static/admin/css/vpn_admin.css
new file mode 100644
index 0000000..05d175c
--- /dev/null
+++ b/static/admin/css/vpn_admin.css
@@ -0,0 +1,137 @@
+/* Custom styles for VPN admin interface */
+
+/* Quick action buttons in server list */
+.quick-actions .button {
+    display: inline-block;
+    padding: 4px 8px;
+    margin: 0 2px;
+    font-size: 11px;
+    line-height: 1.2;
+    text-decoration: none;
+    border: 1px solid #ccc;
+    border-radius: 3px;
+    background: linear-gradient(to bottom, #f8f8f8, #e8e8e8);
+    color: #333;
+    cursor: pointer;
+    white-space: nowrap;
+    min-width: 60px;
+    text-align: center;
+    box-shadow: 0 1px 2px rgba(0,0,0,0.1);
+    transition: all 0.2s ease;
+}
+
+.quick-actions .button:hover {
+    background: linear-gradient(to bottom, #e8e8e8, #d8d8d8);
+    border-color: #bbb;
+    color: #000;
+    text-decoration: none;
+    box-shadow: 0 2px 4px rgba(0,0,0,0.15);
+}
+
+.quick-actions .button:active {
+    background: linear-gradient(to bottom, #d8d8d8, #e8e8e8);
+    box-shadow: inset 0 1px 2px rgba(0,0,0,0.2);
+}
+
+/* Sync button - blue theme */
+.quick-actions .button[href*="/sync/"] {
+    background: linear-gradient(to bottom, #4a90e2, #357abd);
+    border-color: #2968a3;
+    color: white;
+}
+
+.quick-actions .button[href*="/sync/"]:hover {
+    background: linear-gradient(to bottom, #357abd, #2968a3);
+    border-color: #1f5582;
+}
+
+/* Move clients button - orange theme */
+.quick-actions .button[href*="/move-clients/"] {
+    background: linear-gradient(to bottom, #f39c12, #e67e22);
+    border-color: #d35400;
+    color: white;
+}
+
+.quick-actions .button[href*="/move-clients/"]:hover {
+    background: linear-gradient(to bottom, #e67e22, #d35400);
+    border-color: #bf4f36;
+}
+
+/* Status indicators improvements */
+.server-status-ok {
+    color: #27ae60;
+    font-weight: bold;
+}
+
+.server-status-error {
+    color: #e74c3c;
+    font-weight: bold;
+}
+
+.server-status-warning {
+    color: #f39c12;
+    font-weight: bold;
+}
+
+/* Better spacing for list display */
+.admin-object-tools {
+    margin-bottom: 10px;
+}
+
+/* Improve readability of pre-formatted status */
+.changelist-results pre {
+    font-size: 11px;
+    margin: 0;
+    padding: 2px 4px;
+    background: #f8f8f8;
+    border: 1px solid #ddd;
+    border-radius: 3px;
+    max-width: 200px;
+    overflow: hidden;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+}
+
+/* Form improvements for move clients page */
+.form-row.field-box {
+    border: 1px solid #ddd;
+    border-radius: 4px;
+    padding: 10px;
+    margin: 10px 0;
+    background: #f9f9f9;
+}
+
+.form-row.field-box label {
+    font-weight: bold;
+    color: #333;
+    display: block;
+    margin-bottom: 5px;
+}
+
+.form-row.field-box .readonly {
+    padding: 5px;
+    background: white;
+    border: 1px solid #ddd;
+    border-radius: 3px;
+}
+
+.help {
+    background: #e8f4fd;
+    border: 1px solid #b8daff;
+    border-radius: 4px;
+    padding: 15px;
+    margin: 20px 0;
+}
+
+.help h3 {
+    margin-top: 0;
+    color: #0066cc;
+}
+
+.help ul {
+    margin-bottom: 0;
+}
+
+.help li {
+    margin-bottom: 5px;
+}
diff --git a/vpn/admin.py b/vpn/admin.py
index 7d3ab25..2091b92 100644
--- a/vpn/admin.py
+++ b/vpn/admin.py
@@ -337,15 +337,23 @@ class UserAdmin(admin.ModelAdmin):
         return qs
 
     def save_model(self, request, obj, form, change):
+        import logging
+        logger = logging.getLogger(__name__)
+        
         super().save_model(request, obj, form, change)
         selected_servers = form.cleaned_data.get('servers', [])
 
         # Remove ACLs that are no longer selected
-        ACL.objects.filter(user=obj).exclude(server__in=selected_servers).delete()
+        removed_acls = ACL.objects.filter(user=obj).exclude(server__in=selected_servers)
+        for acl in removed_acls:
+            logger.info(f"Removing ACL for user {obj.username} from server {acl.server.name}")
+        removed_acls.delete()
 
         # Create new ACLs for newly selected servers (with default links)
         for server in selected_servers:
             acl, created = ACL.objects.get_or_create(user=obj, server=server)
+            if created:
+                logger.info(f"Created new ACL for user {obj.username} on server {server.name}")
             # Note: get_or_create will use the default save() method which creates default links
 
 @admin.register(AccessLog)
@@ -405,7 +413,10 @@ class ACLAdmin(admin.ModelAdmin):
             data = server.get_user(user)
             return format_object(data)
         except Exception as e:
-            return mark_safe(f"<span style='color: red;'>Error: {e}</span>")
+            import logging
+            logger = logging.getLogger(__name__)
+            logger.error(f"Failed to get user info for {user.username} on {server.name}: {e}")
+            return mark_safe(f"<span style='color: red;'>Server connection error: {e}</span>")
 
     @admin.display(description='Dynamic Config Links')
     def display_links(self, obj):
diff --git a/vpn/models.py b/vpn/models.py
index 9ca6165..ae6584e 100644
--- a/vpn/models.py
+++ b/vpn/models.py
@@ -1,4 +1,5 @@
 import uuid
+import logging
 from django.db import models
 from vpn.tasks import sync_user
 from django.db.models.signals import post_save, pre_delete
@@ -8,6 +9,8 @@ import shortuuid
 
 from django.contrib.auth.models import AbstractUser
 
+logger = logging.getLogger(__name__)
+
 class AccessLog(models.Model):
     user = models.CharField(max_length=256, blank=True, null=True, editable=False)
     server = models.CharField(max_length=256, blank=True, null=True, editable=False)
@@ -65,11 +68,24 @@ class ACL(models.Model):
 
 @receiver(post_save, sender=ACL)
 def acl_created_or_updated(sender, instance, created, **kwargs):
-    sync_user.delay_on_commit(instance.user.id, instance.server.id)
+    try:
+        sync_user.delay_on_commit(instance.user.id, instance.server.id)
+        if created:
+            logger.info(f"Scheduled sync for new ACL: user {instance.user.username} on server {instance.server.name}")
+        else:
+            logger.info(f"Scheduled sync for updated ACL: user {instance.user.username} on server {instance.server.name}")
+    except Exception as e:
+        logger.error(f"Failed to schedule sync task for ACL {instance.id}: {e}")
+        # Don't raise exception to avoid blocking ACL creation/update
 
 @receiver(pre_delete, sender=ACL)
 def acl_deleted(sender, instance, **kwargs):
-    sync_user.delay_on_commit(instance.user.id, instance.server.id)
+    try:
+        sync_user.delay_on_commit(instance.user.id, instance.server.id)
+        logger.info(f"Scheduled sync for deleted ACL: user {instance.user.username} on server {instance.server.name}")
+    except Exception as e:
+        logger.error(f"Failed to schedule sync task for ACL deletion {instance.id}: {e}")
+        # Don't raise exception to avoid blocking ACL deletion
 
 
 class ACLLink(models.Model):
diff --git a/vpn/server_plugins/outline.py b/vpn/server_plugins/outline.py
index 0e7851c..8ed2c0f 100644
--- a/vpn/server_plugins/outline.py
+++ b/vpn/server_plugins/outline.py
@@ -1,5 +1,4 @@
 import logging
-from venv import logger
 import requests
 from django.db import models
 from .generic import Server
@@ -36,12 +35,15 @@ class _FingerprintAdapter(requests.adapters.HTTPAdapter):
 
 
 class OutlineServer(Server):
-    logger = logging.getLogger(__name__)
     admin_url = models.URLField(help_text="Management URL")
     admin_access_cert = models.CharField(max_length=255, help_text="Fingerprint")
     client_hostname = models.CharField(max_length=255, help_text="Server address for clients")
     client_port = models.CharField(max_length=5, help_text="Server port for clients")
     
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.logger = logging.getLogger(__name__)
+    
     class Meta:
         verbose_name = 'Outline'
         verbose_name_plural = 'Outline'
@@ -59,9 +61,6 @@ class OutlineServer(Server):
         return OutlineVPN(api_url=self.admin_url, cert_sha256=self.admin_access_cert)
 
 
-    def __init__(self, *args, **kwargs):
-        super().__init__(*args, **kwargs)
-
     def __str__(self):
         return f"{self.name} ({self.client_hostname}:{self.client_port})"
     
@@ -85,6 +84,7 @@ class OutlineServer(Server):
     
     def sync_users(self):
         from vpn.models import User, ACL
+        logger = logging.getLogger(__name__)
         logger.debug(f"[{self.name}] Sync all users")
         keys = self.client.get_keys()
         acls = ACL.objects.filter(server=self)
@@ -119,10 +119,28 @@ class OutlineServer(Server):
             raise OutlineConnectionError("Client error. Can't connect.", original_exception=e)
 
     def _get_key(self, user):
-        logger.error(f"Asking for key for user {user.username}")
-        result = self.client.get_key(str(user.username))
-        logger.error(f"Got key for user {user.username} - {result}")
-        return result
+        logger = logging.getLogger(__name__)
+        logger.debug(f"[{self.name}] Looking for key for user {user.username}")
+        try:
+            # Try to get key by username first
+            result = self.client.get_key(str(user.username))
+            logger.debug(f"[{self.name}] Found key for user {user.username} by username")
+            return result
+        except OutlineServerErrorException:
+            # If not found by username, search by password (hash)
+            logger.debug(f"[{self.name}] Key not found by username, searching by password")
+            try:
+                keys = self.client.get_keys()
+                for key in keys:
+                    if key.password == user.hash:
+                        logger.debug(f"[{self.name}] Found key for user {user.username} by password match")
+                        return key
+                # No key found
+                logger.debug(f"[{self.name}] No key found for user {user.username}")
+                raise OutlineServerErrorException(f"Key not found for user {user.username}")
+            except Exception as e:
+                logger.error(f"[{self.name}] Error searching for key for user {user.username}: {e}")
+                raise OutlineServerErrorException(f"Error searching for key: {e}")
 
     def get_user(self, user, raw=False):
         user_info = self._get_key(user)
@@ -140,33 +158,53 @@ class OutlineServer(Server):
         
 
     def add_user(self, user):
+        logger = logging.getLogger(__name__)
         try:
             server_user = self._get_key(user)
         except OutlineServerErrorException as e:
             server_user = None
+        
         logger.debug(f"[{self.name}] User {str(server_user)}")
 
         result = {}
         key = None
 
         if server_user:
-            if server_user.method != "chacha20-ietf-poly1305" or \
-            server_user.port != int(self.client_port) or \
-            server_user.name != user.username or \
-            server_user.password != user.hash or \
-            self.client.delete_key(user.hash):
-
-                self.delete_user(user)
-                key = self.client.create_key(
-                    key_id=user.username,
-                    name=user.username,
-                    method=server_user.method,
-                    password=user.hash,
-                    data_limit=None,
-                    port=server_user.port
-                )
-                logger.debug(f"[{self.name}] User {user.username} updated")
+            # Check if user needs update - but don't delete immediately
+            needs_update = (
+                server_user.method != "chacha20-ietf-poly1305" or 
+                server_user.port != int(self.client_port) or 
+                server_user.name != user.username or 
+                server_user.password != user.hash
+            )
+            
+            if needs_update:
+                # Delete old key before creating new one
+                try:
+                    self.client.delete_key(server_user.key_id)
+                    logger.debug(f"[{self.name}] Deleted outdated key for user {user.username}")
+                except Exception as e:
+                    logger.warning(f"[{self.name}] Failed to delete old key for user {user.username}: {e}")
+                
+                # Create new key with correct parameters
+                try:
+                    key = self.client.create_key(
+                        key_id=user.username,
+                        name=user.username,
+                        method="chacha20-ietf-poly1305",
+                        password=user.hash,
+                        data_limit=None,
+                        port=int(self.client_port)
+                    )
+                    logger.info(f"[{self.name}] User {user.username} updated")
+                except OutlineServerErrorException as e:
+                    raise OutlineConnectionError(f"Failed to create updated key for user {user.username}", original_exception=e)
+            else:
+                # User exists and is up to date
+                key = server_user
+                logger.debug(f"[{self.name}] User {user.username} already up to date")
         else:
+            # User doesn't exist, create new key
             try:
                 key = self.client.create_key(
                     key_id=user.username,
@@ -180,23 +218,39 @@ class OutlineServer(Server):
             except OutlineServerErrorException as e:
                 error_message = str(e)
                 if "code\":\"Conflict" in error_message:
-                    logger.warning(f"[{self.name}] Conflict for User {user.username}, trying to force sync. {error_message}")
-                    for key in self.client.get_keys():
-                        logger.warning(f"[{self.name}] checking user: {key.name} passowrd: {key.password}")
-                        if key.password == user.hash:
-                            self.delete_user(user)
-                    return self.add_user(user)
+                    logger.warning(f"[{self.name}] Conflict for User {user.username}, trying to resolve. {error_message}")
+                    # Find conflicting key by password and remove it
+                    try:
+                        for existing_key in self.client.get_keys():
+                            if existing_key.password == user.hash:
+                                logger.warning(f"[{self.name}] Found conflicting key {existing_key.key_id} with same password")
+                                self.client.delete_key(existing_key.key_id)
+                                break
+                        # Try to create again after cleanup
+                        return self.add_user(user)
+                    except Exception as cleanup_error:
+                        logger.error(f"[{self.name}] Failed to resolve conflict for user {user.username}: {cleanup_error}")
+                        raise OutlineConnectionError(f"Conflict resolution failed for user {user.username}", original_exception=e)
                 else:
                     raise OutlineConnectionError("API Error", original_exception=e)
+        
+        # Build result from key object
         try:
-            result['key_id'] = key.key_id
-            result['name'] = key.name
-            result['method'] = key.method
-            result['password'] = key.password
-            result['data_limit'] = key.data_limit
-            result['port'] = key.port
+            if key:
+                result = {
+                    'key_id': key.key_id,
+                    'name': key.name,
+                    'method': key.method,
+                    'password': key.password,
+                    'data_limit': key.data_limit,
+                    'port': key.port
+                }
+            else:
+                result = {"error": "No key object returned"}
         except Exception as e:
+            logger.error(f"[{self.name}] Error building result for user {user.username}: {e}")
             result = {"error": str(e)}
+        
         return result
 
     def delete_user(self, user):
diff --git a/vpn/tasks.py b/vpn/tasks.py
index 9f9d523..58d59b8 100644
--- a/vpn/tasks.py
+++ b/vpn/tasks.py
@@ -1,9 +1,7 @@
 
 import logging
 from celery import group, shared_task
-#from django_celery_results.models import TaskResult
-from outline_vpn.outline_vpn import OutlineServerErrorException
-
+from celery.exceptions import Retry
 
 logger = logging.getLogger(__name__)
 
@@ -13,61 +11,113 @@ class TaskFailedException(Exception):
         super().__init__(f"{self.message}")
 
 
-@shared_task(name="sync_all_servers")
-def sync_all_users():
-    from .models import User, ACL
+@shared_task(name="sync_all_servers", bind=True, autoretry_for=(Exception,), retry_kwargs={'max_retries': 3, 'countdown': 60})
+def sync_all_users(self):
     from vpn.server_plugins import Server
 
     servers = Server.objects.all()
     
+    if not servers.exists():
+        logger.warning("No servers found for synchronization")
+        return "No servers to sync"
+    
     tasks = group(sync_users.s(server.id) for server in servers)
-
     result = tasks.apply_async()
     
-    return result
+    return f"Initiated sync for {servers.count()} servers"
 
-@shared_task(name="sync_all_users_on_server")
-def sync_users(server_id):
-    from .models import Server
-    status = {}
+@shared_task(name="sync_all_users_on_server", bind=True, autoretry_for=(Exception,), retry_kwargs={'max_retries': 3, 'countdown': 60})
+def sync_users(self, server_id):
+    from vpn.server_plugins import Server
+    
     try:
         server = Server.objects.get(id=server_id)
-        sync = server.sync_users()
-        if sync:
+        logger.info(f"Starting user sync for server {server.name}")
+        
+        sync_result = server.sync_users()
+        
+        if sync_result:
             logger.info(f"Successfully synced users for server {server.name}")
             return f"Successfully synced users for server {server.name}"
+        else:
+            raise TaskFailedException(f"Sync failed for server {server.name}")
+            
+    except Server.DoesNotExist:
+        logger.error(f"Server with id {server_id} not found")
+        raise TaskFailedException(f"Server with id {server_id} not found")
     except Exception as e:
-        logger.error(f"Error syncing users for server {server.name}: {e}")
-        raise TaskFailedException(message=f"Error syncing users for server {server.name}")
+        logger.error(f"Error syncing users for server id {server_id}: {e}")
+        if self.request.retries < 3:
+            logger.info(f"Retrying sync for server id {server_id} (attempt {self.request.retries + 1})")
+            raise self.retry(countdown=60)
+        raise TaskFailedException(f"Error syncing users for server id {server_id}: {e}")
 
-@shared_task(name="sync_server_info")
-def sync_server(id):
+@shared_task(name="sync_server_info", bind=True, autoretry_for=(Exception,), retry_kwargs={'max_retries': 3, 'countdown': 30})
+def sync_server(self, id):
     from vpn.server_plugins import Server
-    # task_result = TaskResult.objects.get_task(self.request.id) 
-    # task_result.status='RUNNING'
-    # task_result.save()
-    return {"status": Server.objects.get(id=id).sync()}
+    
+    try:
+        server = Server.objects.get(id=id)
+        logger.info(f"Starting server info sync for {server.name}")
+        
+        sync_result = server.sync()
+        return {"status": sync_result, "server": server.name}
+        
+    except Server.DoesNotExist:
+        logger.error(f"Server with id {id} not found")
+        return {"error": f"Server with id {id} not found"}
+    except Exception as e:
+        logger.error(f"Error syncing server info for id {id}: {e}")
+        if self.request.retries < 3:
+            logger.info(f"Retrying server sync for id {id} (attempt {self.request.retries + 1})")
+            raise self.retry(countdown=30)
+        return {"error": f"Error syncing server info: {e}"}
 
-@shared_task(name="sync_user_on_server")
-def sync_user(user_id, server_id):
+@shared_task(name="sync_user_on_server", bind=True, autoretry_for=(Exception,), retry_kwargs={'max_retries': 5, 'countdown': 30})
+def sync_user(self, user_id, server_id):
     from .models import User, ACL
     from vpn.server_plugins import Server
     
     errors = {}
     result = {}
-    user = User.objects.get(id=user_id)
-    acls = ACL.objects.filter(user=user)
-
-    server = Server.objects.get(id=server_id)
-
+    
     try:
-        if acls.filter(server=server).exists():
+        user = User.objects.get(id=user_id)
+        server = Server.objects.get(id=server_id)
+        
+        logger.info(f"Syncing user {user.username} on server {server.name}")
+        
+        # Check if ACL exists
+        acl_exists = ACL.objects.filter(user=user, server=server).exists()
+        
+        if acl_exists:
+            # User should exist on server
             result[server.name] = server.add_user(user)
+            logger.info(f"Added/updated user {user.username} on server {server.name}")
         else:
+            # User should be removed from server
             result[server.name] = server.delete_user(user)
+            logger.info(f"Removed user {user.username} from server {server.name}")
+            
+    except User.DoesNotExist:
+        error_msg = f"User with id {user_id} not found"
+        logger.error(error_msg)
+        errors["user"] = error_msg
+    except Server.DoesNotExist:
+        error_msg = f"Server with id {server_id} not found"
+        logger.error(error_msg)
+        errors["server"] = error_msg
     except Exception as e:
-        errors[server.name] = {"error": e}
-    finally:
-        if errors:
-            raise TaskFailedException(message=f"Errors during taks: {errors}")
-        return result
\ No newline at end of file
+        error_msg = f"Error syncing user {user_id} on server {server_id}: {e}"
+        logger.error(error_msg)
+        errors[f"server_{server_id}"] = error_msg
+        
+        # Retry on failure unless it's a permanent error
+        if self.request.retries < 5:
+            logger.info(f"Retrying user sync for user {user_id} on server {server_id} (attempt {self.request.retries + 1})")
+            raise self.retry(countdown=30)
+    
+    if errors:
+        raise TaskFailedException(message=f"Errors during task: {errors}")
+    
+    return result
\ No newline at end of file
diff --git a/vpn/templates/admin/simple_move_clients.html b/vpn/templates/admin/simple_move_clients.html
new file mode 100644
index 0000000..d4c7860
--- /dev/null
+++ b/vpn/templates/admin/simple_move_clients.html
@@ -0,0 +1,93 @@
+{% extends "admin/base_site.html" %}
+{% load i18n admin_urls static admin_list %}
+
+{% block title %}{{ title }} | {{ site_title|default:_('Django site admin') }}{% endblock %}
+
+{% block extrahead %}
+    <link rel="stylesheet" type="text/css" href="{% static 'admin/css/vpn_admin.css' %}">
+{% endblock %}
+
+{% block breadcrumbs %}
+<div class="breadcrumbs">
+    <a href="{% url 'admin:index' %}">{% trans 'Home' %}</a>
+    &rsaquo; <a href="{% url 'admin:app_list' app_label=opts.app_label %}">{{ opts.app_config.verbose_name }}</a>
+    &rsaquo; <a href="{% url 'admin:vpn_server_changelist' %}">{{ opts.verbose_name_plural|capfirst }}</a>
+    &rsaquo; {{ title }}
+</div>
+{% endblock %}
+
+{% block content %}
+<h1>{{ title }}</h1>
+
+<div class="module aligned">
+    <div class="form-row">
+        <div class="form-row field-box">
+            <label>Source Server:</label>
+            <div class="readonly"><strong>{{ source_server.name }}</strong> ({{ source_server.server_type }})</div>
+        </div>
+        
+        <div class="form-row field-box">
+            <label>Statistics:</label>
+            <div class="readonly">
+                <strong>{{ links_count }}</strong> client link(s) for <strong>{{ users_count }}</strong> user(s)
+            </div>
+        </div>
+    </div>
+</div>
+
+{% if links_count == 0 %}
+    <div class="messagelist">
+        <div class="warning">No client links found on this server.</div>
+    </div>
+    <div class="submit-row">
+        <a href="{% url 'admin:vpn_server_changelist' %}" class="default">« Back to server list</a>
+    </div>
+{% else %}
+    <form method="post" id="move-form">
+        {% csrf_token %}
+        
+        <fieldset class="module aligned">
+            <h2>Move Options</h2>
+            
+            <div class="form-row">
+                <div>
+                    <label for="target_server" class="required">Target Server:</label>
+                    <select id="target_server" name="target_server" class="vLargeTextField" required>
+                        <option value="">-- Select target server --</option>
+                        {% for server in all_servers %}
+                            <option value="{{ server.id }}">{{ server.name }} ({{ server.server_type }})</option>
+                        {% endfor %}
+                    </select>
+                </div>
+            </div>
+            
+            <div class="form-row">
+                <div>
+                    <label for="add_prefix">Add prefix to comments (optional):</label>
+                    <input type="text" id="add_prefix" name="add_prefix" class="vTextField" 
+                           placeholder="e.g. [FROM {{ source_server.name }}]">
+                    <p class="help">This prefix will be added to all client link comments</p>
+                </div>
+            </div>
+        </fieldset>
+
+        <div class="submit-row">
+            <input type="submit" value="Move All Client Links" class="default" 
+                   onclick="return confirm('Are you sure you want to move ALL {{ links_count }} client link(s) from {{ source_server.name }} to the selected target server?\\n\\nThis action cannot be undone.');">
+            <a href="{% url 'admin:vpn_server_changelist' %}" class="button cancel">Cancel</a>
+        </div>
+    </form>
+    
+    <div class="help">
+        <h3>What will happen:</h3>
+        <ul>
+            <li>All {{ links_count }} client links will be moved from <strong>{{ source_server.name }}</strong> to the target server</li>
+            <li>Users who don't have access to the target server will get new ACL entries created automatically</li>
+            <li>Empty ACL entries on the source server will be cleaned up</li>
+            <li>All link settings and comments will be preserved (with optional prefix)</li>
+            <li>This operation is database-only and doesn't require server connectivity</li>
+        </ul>
+    </div>
+{% endif %}
+
+{% endblock %}
\ No newline at end of file
diff --git a/vpn/templates/admin/vpn/server/change_list.html.backup b/vpn/templates/admin/vpn/server/change_list.html.backup
new file mode 100644
index 0000000..43e7932
--- /dev/null
+++ b/vpn/templates/admin/vpn/server/change_list.html.backup
@@ -0,0 +1,11 @@
+{% extends "admin/change_list.html" %}
+{% load admin_list admin_urls %}
+
+{% block content_title %}
+    <h1>{{ cl.opts.verbose_name_plural|capfirst }}</h1>
+{% endblock %}
+
+{% comment %}
+This template overrides the default changelist to provide a cleaner interface
+without any bulk operations blocks that might be added by external packages
+{% endcomment %}
diff --git a/vpn/views.py b/vpn/views.py
index 88876e8..1998c46 100644
--- a/vpn/views.py
+++ b/vpn/views.py
@@ -22,20 +22,28 @@ def userFrontend(request, user_hash):
 
 def shadowsocks(request, link):
     from .models import ACLLink, AccessLog
+    import logging
+    
+    logger = logging.getLogger(__name__)
+    
     try:
         acl_link = get_object_or_404(ACLLink, link=link)
         acl = acl_link.acl
+        logger.info(f"Found ACL link for user {acl.user.username} on server {acl.server.name}")
     except Http404:
+        logger.warning(f"ACL link not found: {link}")
         AccessLog.objects.create(user=None, server="Unknown", action="Failed",
                                  data=f"ACL not found for link: {link}")
         return JsonResponse({"error": "Not allowed"}, status=403)
 
     try:
         server_user = acl.server.get_user(acl.user, raw=True)
+        logger.info(f"Successfully retrieved user credentials for {acl.user.username} from {acl.server.name}")
     except Exception as e:
+        logger.error(f"Failed to get user credentials for {acl.user.username} from {acl.server.name}: {e}")
         AccessLog.objects.create(user=acl.user, server=acl.server.name, action="Failed",
-                                 data=f"{e}")
-        return JsonResponse({"error": f"Couldn't get credentials from server. {e}"})
+                                 data=f"Failed to get credentials: {e}")
+        return JsonResponse({"error": f"Couldn't get credentials from server. {e}"}, status=500)
 
     if request.GET.get('mode') == 'json':
       config = {