Moving away: close your bank account, you must live in the country to have a bank account here.
Moving to: you must open a bank account here, we don’t accept foreign IBANs
Using a banking application: you must have US tech spyware on your phone, otherwise we don’t consider it secure.
We need a European federation. I want to be able to move somewhere with my European bank account, get paid by European employer, pay with my European money using a European payment system without having to tell some other non-European country all about it.
I am not sure what the problem is, but if you are a legal resident in an EU country you are entitled to open a “basic payment account”. Banks cannot refuse your application for a basic payment account just because you don’t live in the country where the bank is established.