During registration I got the error message: ‘Your IBAN is already used’. What should I do?

There is a check during the registration process on the IBAN number. It looks like that your IBAN number is already in use by another customer account. The IBAN number may only be linked to one PARK NOW account. Please choose an alternative IBAN. If you encounter further problems during registration or have further questions, please contact our customer service.