I think they use a strange algorithm 😉 Initiallly they were talking about mule accounts then suspicious accounts with no movement and suddenly so many suspended accounts resulted in beeing suspicious? 😏
If you use mobile banking with the App of your bank account it has to be connected with the Thai mobile no. you have when you opened the account of course. You cannot open a bank acc. in TH without a Thai mobile number and thefore you cannot use your mobile banking app with a foreign sim