The screenshot shows the dashboard page with a "Мои конференции и заявки" (My conferences and applications) section. There's a popup error showing "Error: permission denied for table users" which means RLS is blocking access to the auth.users table when trying to delete conferences or change regions.

Let me fix this by creating proper SECURITY DEFINER functions for all these operations:

Loaded SQL tool

Created conference functions

The error "permission denied for table users" means the SECURITY DEFINER functions can't access auth.users. Let me fix this and also add functions for conference deletion and region update:

Loaded SQL tool

Granted permissions

Created conference functions