In the beginning when this visa first became available last July there were no time-frames of how long the money had to be in your bank account. Now, as the abuses have been recognized, one month is the minimum at some embassies, with 3-6 months now the norm at the countries around Thailand. Taiwan is the most lenient still.
no. He asked specifically about how long the bt800,000 had to stay in the account, and you said forever, until your expiration date, and that is wrong. The rules are just what I posted.
you must leave the bt800,000 in your account for at least three months after you get your early stamp, then for the rest of the year the balance must stay above bt400,000. This does not change because you are switching to the monthly deposits method. After you get your year stamp based on 12 monthly bt65,000+ deposits, at that point you can remove the last bt400,000. If you take the money out before those times then you are in violation and extension was cancelled meaning you start over completely, and at an extreme they could charge you with overstay.
you can not apply through the embassy/consulate in Germany if you are not physically in Germany no matter what someone tells you. You can try , but when you are asked for a copy of every page in your passport, to check the entry stamps, and exactly what country you are physically in. It will be a bt10,000 mistake when you try it. Being German has no special privileges for the DTV requirements.