I have been living on Koph Phangan since 1,5 year and now I am going to visit Chiang Mai for 1 month. I still have my house on Koh Phangan and my TM30 is written by my landlord here.
Is it possible to do a Visa extension (covid extension) at the immigration office in Chiang Mai with my Koh Phangan address or do I need to have a rental contract in Chiang Mai to do that?