docs: update README.md

README.md

@@ -74,6 +74,34 @@ for repairing installations, rebuilding statistics, and managing user roles.
 For a complete list of available commands, usage examples, and detailed documentation, see the
 [OCC Commands Wiki page](https://github.com/chenasraf/nextcloud-forum/wiki/OCC-Commands).
 
+## Troubleshooting
+
+### Cannot access administrator features
+
+If you are a Nextcloud administrator but cannot access Forum admin features (e.g., managing
+categories, roles, or settings), this is likely due to missing database seeds or role assignments.
+
+**Option 1: Using OCC commands**
+
+Run the following commands from your Nextcloud installation directory:
+
+```bash
+# Repair database seeds (creates default roles and permissions if missing)
+php occ forum:repair-seeds
+
+# Assign administrator role to a user
+php occ forum:set-role <username> admin
+```
+
+**Option 2: Using the Admin UI**
+
+1. Log in to Nextcloud as an administrator
+2. Go to **Administration Settings** (click your profile picture → Administration Settings)
+3. Navigate to **Forum** in the left sidebar under the Administration section
+4. Use the **Repair Seeds** button to restore default roles and permissions
+5. If the seeds are already in plac, use the **User Roles** section to assign the administrator role
+   to users
+
 ## Contributing
 
 I am developing this app on my free time, so any support, whether code, issues, or just stars is