Daniel Mariani please ignore the rude comments. I would talk to the Thai Embassy in the US. Or find an international school here in Thailand and let them issue y’all a work permit. Maybe even teach here in Thailand for a while until Covid calms down in Myanmar. Good luck.
There was a guy from the US that was on my flight last week. He got everything done in 3 weeks. It depends on the school, how fast and hard they work on your case.
as far as I understand, it follows the date of entry only. And after that follows the date you did your 90 days. But looks like they screwed up the date themselves when they stamped the August date