As a donor/membership applicant,
I want to be able to provide my non-German IBAN,
so that I am not required to have a German bank account.
Acceptance Criteria:
- All IBANs that pass the validation are accepted when donating/becoming a member.
Background:
There actually never was a restriction to German bank accounts. The validation passes for non-German IBANs and the form can be submitted (i. e. the submit button is clickable). But the server responds by showing the form again instead of showing the confirmation page. When donating, an error message is being displayed below the bank data fields. The membership application form leaves users clueless about what's wrong with their input.