What happens to my account, my charging history, my RFID card, and any credit balance if I let the deadline pass?

It's simple: you log in with your usual email address, and we link your account automatically behind the scenes. Nothing gets moved, nothing gets lost - any credit balance stays right where it was. Right after the switch, your charging history might briefly disappear from view, but don't worry, it reliably comes back.
Will anything change about who can access my charging station and how I manage that?
If I try to use the old app after the deadline, will I be redirected, locked out, or shown an error message?