Facial recognition often fails with several attempts needed. If you change your phone bjt keep same sim you need to visit the branch, Krungthai anyway. If you change your passport up date with phone company and the bank.
i do live in Thailand and I have yet to discover anything that makes the elite visa worth the money. Even getting my extension of stay only takes about an hour for 1900 baht.
I've been through 7 times and the longest was 10 minutes. Shortest 2 minutes. Hardly worth the expense of an elite Visa. Granted it might be a bit busier at this time of year but still would rather que than waste so much money.
Donate after you have what you need from them. That is what I do for immigration officer. Usually something other than money. That way you are saying thankyou for their help and not trying to influence their decisions.