diff --git a/mnemo_cards_backend/lib/api/v2/admin_auth_api_v2.dart b/mnemo_cards_backend/lib/api/v2/admin_auth_api_v2.dart
index 6c1b16e..3a0a452 100644
--- a/mnemo_cards_backend/lib/api/v2/admin_auth_api_v2.dart
+++ b/mnemo_cards_backend/lib/api/v2/admin_auth_api_v2.dart
@@ -159,7 +159,9 @@ class AdminAuthApiV2 {
       }
 
       // Generate JWT token using JwtService (same as regular auth)
+      print('[ADMIN AUTH] Generating tokens for admin user ${user.id}');
       final tokens = await _jwtService.generateTokens(user);
+      print('[ADMIN AUTH] Generated access token, length: ${tokens.accessToken.length}');
 
       return _json({
         'success': true,
diff --git a/mnemo_cards_backend/lib/api/v2/authorize_v2.dart b/mnemo_cards_backend/lib/api/v2/authorize_v2.dart
index 485e101..89bec66 100644
--- a/mnemo_cards_backend/lib/api/v2/authorize_v2.dart
+++ b/mnemo_cards_backend/lib/api/v2/authorize_v2.dart
@@ -112,9 +112,28 @@ Middleware authorizeV2(UserManager userManager, JwtService jwtService) {
       }
 
       final token = authHeader.substring(7); // Remove "Bearer " prefix
+      
+      // Debug logging for admin endpoints
+      if (normalizedPath.startsWith('/admin/')) {
+        print('[AUTH DEBUG] Verifying token for path: $normalizedPath');
+        print('[AUTH DEBUG] Token length: ${token.length}');
+        print('[AUTH DEBUG] Token preview: ${token.length > 50 ? token.substring(0, 50) + "..." : token}');
+      }
+      
       final userId = jwtService.verifyAccessToken(token);
 
       if (userId == null) {
+        // Additional debug info for admin endpoints
+        if (normalizedPath.startsWith('/admin/')) {
+          print('[AUTH DEBUG] Token verification failed for path: $normalizedPath');
+          // Try to extract payload to see what's wrong
+          try {
+            final payload = jwtService.extractPayload(token);
+            print('[AUTH DEBUG] Extracted payload: $payload');
+          } catch (e) {
+            print('[AUTH DEBUG] Could not extract payload: $e');
+          }
+        }
         return Response(
           401,
           headers: {'Content-Type': 'application/json'},
diff --git a/mnemo_cards_backend/lib/api/v2/jwt_service.dart b/mnemo_cards_backend/lib/api/v2/jwt_service.dart
index cf9d42e..621b988 100644
--- a/mnemo_cards_backend/lib/api/v2/jwt_service.dart
+++ b/mnemo_cards_backend/lib/api/v2/jwt_service.dart
@@ -46,6 +46,10 @@ class JwtService {
     // Create JWT tokens with proper HMAC-SHA256 signing
     final accessToken = _createSimpleJwt(accessTokenPayload);
     final refreshToken = _createSimpleJwt(refreshTokenPayload);
+    
+    print('[JWT DEBUG] Generated access token for user ${user.id}');
+    print('[JWT DEBUG] Access token payload: $accessTokenPayload');
+    print('[JWT DEBUG] Access token length: ${accessToken.length}');
 
     // Store refresh token for invalidation
     final userId = user.id;
@@ -66,24 +70,38 @@ class JwtService {
   String? verifyAccessToken(String token) {
     try {
       final payload = _verifySimpleJwt(token);
-      if (payload == null) return null;
+      if (payload == null) {
+        print('[JWT DEBUG] Token verification failed: payload is null');
+        return null;
+      }
+
+      print('[JWT DEBUG] Token payload: $payload');
 
       // Check if token is expired
       final exp = payload['exp'] as int?;
       if (exp != null) {
         final expiryTime = DateTime.fromMillisecondsSinceEpoch(exp * 1000);
-        if (DateTime.now().isAfter(expiryTime)) {
+        final now = DateTime.now();
+        print('[JWT DEBUG] Token expiry: $expiryTime, now: $now, expired: ${now.isAfter(expiryTime)}');
+        if (now.isAfter(expiryTime)) {
+          print('[JWT DEBUG] Token is expired');
           return null;
         }
       }
 
       // Check token type
-      if (payload['type'] != 'access') {
+      final tokenType = payload['type'];
+      print('[JWT DEBUG] Token type: $tokenType');
+      if (tokenType != 'access') {
+        print('[JWT DEBUG] Token type mismatch: expected "access", got "$tokenType"');
         return null;
       }
 
-      return payload['userId']?.toString();
+      final userId = payload['userId']?.toString();
+      print('[JWT DEBUG] Extracted userId: $userId');
+      return userId;
     } catch (e) {
+      print('[JWT DEBUG] Token verification exception: $e');
       return null;
     }
   }
@@ -143,7 +161,10 @@ class JwtService {
   Map<String, dynamic>? _verifySimpleJwt(String token) {
     try {
       final parts = token.split('.');
-      if (parts.length != 3) return null;
+      if (parts.length != 3) {
+        print('[JWT DEBUG] Invalid token format: expected 3 parts, got ${parts.length}');
+        return null;
+      }
 
       final headerB64 = parts[0];
       final payloadB64 = parts[1];
@@ -156,13 +177,19 @@ class JwtService {
       final expectedSignatureB64 = base64UrlEncode(expectedSignature);
 
       if (signatureB64 != expectedSignatureB64) {
+        print('[JWT DEBUG] Invalid signature');
+        print('[JWT DEBUG] Expected: $expectedSignatureB64');
+        print('[JWT DEBUG] Got: $signatureB64');
         return null; // Invalid signature
       }
 
       // Decode payload
       final payloadJson = utf8.decode(base64Url.decode(payloadB64));
-      return jsonDecode(payloadJson) as Map<String, dynamic>;
+      final payload = jsonDecode(payloadJson) as Map<String, dynamic>;
+      print('[JWT DEBUG] Decoded payload: $payload');
+      return payload;
     } catch (e) {
+      print('[JWT DEBUG] Exception during token verification: $e');
       return null;
     }
   }