on the other point I renewed my long term visa recently too and the immigration officers could not have been more helpful. I changed from banked money to monthly payments.
same here. If I want to bring in 3 million baht to buy a condo and 1.5 million baht to buy a new car that is 4.5 million baht that will not come to Thailand if I am taxed on it here.
so you are talking about last years extension in which case you are correct. To meet the terms of that extension you should have had 800k in your bank for 3 months after and not below 400k for the rest if the year. However, my office never checked up on that and just accepted the 12 monthly payments for this years extension.
I have just gone through this procedure in Nakhon Phanom. The print out from the banking app was accepted but I had got one after 6 months and one at renewal so it showed all 12 payments which I highlighted. All were ftt. I also produced my bank book updated regularly showing all 12 payments. I highlighted these on my copies. I also had to show my UK bank statements to prove where the money had become from. I highlighted the withdrawals and they spent a long time cross checking transfers. They did not ask for any proof that I had net the financial requirements of my previous extension ie 800k in bank for 3 months and not below 400k. I had left the 800k in all year in case there was a glitch. They also did not ask to see my Wise transfer slips but I had them in case. I hope this helps but remember, your office may have different requirements.