it sounds like many are using Wise accounts and have been ok. I have no idea, but I applied via HCM from Phu Quoc.... it's an unknown waiting game. I would call the Thai consulate in HCM, the lady is pretty helpful and kind.
it's a little different to Wise, my bank has a proof of balance option, it looks like a letter stating your balance with the current date. The statements only run quarterly. So the next one technically would be ready at the end of Nov. Annoying but 💁
closing balance is in August. So I combined the two docs into a pdf. One is proof of balance with current date and one is the most recent statement June to Aug.