I'm due to extend my ED visa by May 31. As of today, my school has not received my paperwork back from the Ministry of Education. If it's not processed in time, what are my options? Can I pay an overstay fine and keep my visa valid? Should I still go to Chiang Mai immigration by May 31 and explain the situation without the documents? Even though this isn't my fault immigration won't care about that, right? Just trying to be prepared for worst case scenario.