What should I do if I missed my 90-day report in Thailand by two months?

@Mohammed ******

Not too surprised they didn't fine you. Things were particularly confused regarding exactly how the amnesty for doing 90-Day Reports would end. It turned out that some offices required people who took advantage of the 90-Day Report part of the amnesty to file a 90-Day Report in August to get back with the program. Seems to me that your Immigration Officer took a very sensible approach to the matter in not fining you for what was a bit of a confusing situation. Now things are back to normal for you in terms of your 90-Day Reports.

The advice I gave to people staying a long time (advice I followed myself) was to simply ignore the 90-Day Report amnesty entirely. That is, continue to file when due because then you always know when you need to file the next one. The trouble with the amnesty is that people were told they didn't have to file 90-Day Reports without being told at the time how they would be expected to get back into compliance. I correctly guessed at the time that whatever pleasure was to be had in not doing a 90-Day Report would disappear in trying to figure out and complying with whatever scheme would eventually be announced to get people back to filing 90-Day Reports. I think I was right.