Good to know. I was with my pal the other day and he was asking about getting a local license - he has Singaporean DL. I may have given him wrong info lol
It was a couple of years till I had one to do in Bangkok during Covid. Before that travelled for work. The admin staff at work dealt with it. I remember some people being baffled as they never knew it was a thing previously.
I have read different to this in a Chiang Mai group - the method of reporting resets too if you re-enter so fist 90 day after entering always has to be in person. A couple of provisos here 1) Chiang MaI dos have some peculiarities in their immigration office 2) When I have completed my 90 day I always did it in in person it at Jomtien as it is efficient and there is a good pie shop nearby :-)
As you are in USA and have time I would apply there in your home country. Visas from neighbouring countries have recently come under a little more scrutiny by some Immigration Officers.
I saw a rejection that said foreign accounts are fine but they wanted certain documentation. Chiang Mai seem to be more particular in the case of extensions, not DTV, than other offices such as Jomtien. An agent told me they wanted a bank in Chiang Mai. I could use my Bangkok or Pattaya accounts but the documentation would have to come from the holding branch directly and not from a branch in CM.