Kbank just informed me that they have the same limit of 50000 per day for all foreign customers who apply for Kplus (that's their app) starting this June.
Old customers are treated on a case-by-case basis (I guess, if you are Chinese and transfer 50,000,000, that's ok, just write "proceeds from honest scamming", if you are Laotian, 50 Baht is way over the limit).
BTW Kbank also says, they have no age limits, neither for the app nor for the account nor for the amounts you transfer, but you must be over 12 y.o. (I guess most esteemed members meet this requirement easily).