If you always get banned every time you reinstall the game, when the game is loading try to check your id on the top right, whether the id is the same or different. If the id is the same it means you are accessing your banned game account. And what phone are you using, is it Apple or Android? If you are using android, you can clear data in settings-apps-hogwarts mystery-select clear data and clear all data. After that loading the game and check the id on your top right whether the id is the same as your banned account id or not, if it's different it means you can play with a new account.
This often happens to me when using this mod on android, when i delete and reinstall the mod my account remains in the mod without having to log in again, so clearing all data it's easier to switch accounts without having to delete them.