Thanks Guys, a little more info. After looking at his Passport, he has a Thai Wife extension to 25 Apr 24 with an unused Re Entry Permit ( Korat). He was under the impression that you couldn’t use his 400K ( Bank Method) at all during the extension . Went home to Germany in Jun23 and arrived here early Dec23 with a New Non O visa ( Retirement, more easy in Germany says he ), so he could then use his 400K in the bank. He interpreted the Munich site info and a fellow German to indicate that a second 90 day extension would be available after a new law was passed in Nov23??
He only spends 5 months a year here and plans with his wife to return to Germany in June.
His current 90 days runs out early Mar24. I told him to contact or visit Korat Immigration for options. My option would be do a border bounce near here ( Cambodia) and enter on the Re Entry Permit giving 25 Apr24 then a 60 Day extension to visit wife taking him pass his return to Germany time. Any other ideas would be appreciated. Thanks again, regards.