if the tm30 address is 700 km from the io that he applies for his extension at he might have a problem. Best to get a tm30 from the place he is staying at the time of application.
Did you get a reentry stamp before leaving Thailand? If not then your extension is now cancelled anyway. My take on this, and please correct me if I am wrong, would be to apply for a new 90 day non o in your home country and enter Thailand on that. Make your bank account up to
*****
0 baht and then apply for 12cmonth extension with a few days to go on your 90 day.
I did not do tm30 for the first 5 months in Thailand. Nor did I do 90 day report. I knew nothing about them. On going to immigration I just got a ticking off and they did both for me. The IO must have been in a god mood.
fine until they catch you on overstay. Anyway, they take all your bio metrics at the airport when you enter. If you have a mobile they know where you are.
I eventually got a bb account on my 4th visit to the same main branch. They tried to sell me insurance fir around 7000 baht but I showed them my certificate I already had. They relented.