Hello,
I am a US Citizen living in Thailand continuously since 1998. I signed up with "Transferwise" (wise.com now) many years ago and used my mail forwarding address in the USA as my "residential address". In June of this year I got the same email you got, giving me two weeks to get a proper physical, residential address or my account would be closed. I needed a "Proof of Thai Address" to change my "residence" to where I am in Thailand and the only thing I could come up with was a Bangkok Bank account statement. But the address on that was in Thai, which won't work. I went to my local Bangkok Bank and they created for me an English version of the address and printed out an official bank statement, stamped and signed by the bank. Wise.com accepted that proof of residence and now I have a verified English language address in Thailand which Wise.com uses.
That does mean there are certain stocks in the USA I can no longer buy and I cannot take advantage of Wise's interest bearing account, but all is well.
I think that Wise are victims of "Know Your Customer" that the USA is requiring these days. Go ahead and find out what you have with an English language version of your Thailand physical address and see if Wise will accept that.
By the way, I was not able to edit my address myself, it was locked. I had to go through verification by sending the bank letter to Wise.com for them to approve the address, and then they changed the address (which is locked again now).