should get a stamp like this into the old passport when you get your new one from the authorities in Germany, carry and show both passports with you. then go to the immigration here and get them transferred to the new passport
I done this all in one day, first transfer stamps from old to new passport, for stay, retirement, then the 90-day report, and after renewal of my stay for another 12 month all done in under 2 hours as they done one at the time, Pathum Thani immigration
well, just my experience and what I was told by the bank...I was nearly 3 years in Australia because of covid...had my account with SCB and KTB, had the thai phone number canceled and had an Australian number, never ever a problem...