Well, did you directly contact and speak with someone at the LTR Visa (BOI) Office about your particular circumstances?
Or, perhaps in addition to speaking directly with someone, also write a letter explaining you would like to elect for the "Savings Deposit" option for Insurance Requirements???
Seems to be no issues, but if you are able to transfer your 800k Baht now and let it sit in your Thai bank account ("seasoning" of funds), then on your return to Thailand months later, you would not have to worry about the minimum seasoning time period of your funds in a Thai bank account, as it has been sitting there while you were away in your home country: if you were to apply for a change to Non–O in-country or Extension with your local Thai Immigration Office
Well, following from your Original Question/Post, if you are located in Da Nang, then there are no choices and you will submit your DTV E–Visa application to the Thai Consulate in HCMC, but if you want to submit your DTV E–Visa application to the Thai Embassy in Hanoi, then you need to go elsewhere in Vietnam that falls under the jurisdiction of the Thai Embassy in Hanoi
The Thai Embassy/Thai Consulate in Vietnam will request for both selfie photo and receipt with full name or other documents for actual proof of physical location
Yes, now in May 2025, with great advances in A.I., the various GPT's, and search engines in general, answers can be found in milliseconds, but may not be 100% correct and may not go into specific details, exceptions, or other nuances
if the question is: Are Thai Immigration Officers asking to physically see the email from TDAC or the TDAC QR Code on your mobile phone or a hard copy printout, then the answer is not necessarily:
Because, there is the scenario where a traveler fills out their TDAC on the kiosks/tablets/computer at the Port of Entry upon landing or on arrival and perhaps you might jot down the confirmation code provided....
However, everyone needs a properly filled out TDAC that matches the information in their passport. If there is any mis-match among information between the TDAC and your passport, then you will need to fill out/submit a new TDAC