@Federico ************

I meant Temporary VISA Extension Center at Muang Thong Tani

Yesterday on MTT didn't allow to extend TR visa for 60 days. They said first extension 30 days and after that 60 days covid extension.

I am on the way there already. I will be there from 20.03. to 21.03. and on Thai Smile Airways had problem and wouldn't issue my boarding pass without proof of hotel booking. I asked what's the problem and they said they don't allow fly there and back within same day. I will stay there one day but they want to be sure and want to see hotel booking.

thank you for info. I canceled that plans and would like to stay in country by using a ED visa. I don´t intend to work or do anything ilegal but I just think it is not good idea to apply for ED visa with Non B visa and METV history.

Thank you for info and advice. So if I understand it well, there is not any way how to extend this kind of visa? I have to apply for new Non B with other purpose?

No, I am not