@Karl ****************
You do *NOT* have a Non-O visa. You have a one year extension of stay based on retirement. You can stay in Thailand until December 22, 2021.
Assuming you live in Khon Kaen; you will have to do the following:
-You will have to submit a 90 day report every 90 days. You should have a white slip of paper stapled in your passport telling you the due date. You can file it between 14 days prior to 7 days after.
- 30 days before December 22, 2021, you will have to go to the Khon Kaen immigration office and reapply for a one year extension of stay based on retirement.