The payment method can be registered during the first purchase in the ticket shop or in the mobile ordering.
If you want to change your payment method, the change can be made during the next order in the ticket store or mobile ordering.
For the moment payment method can't be added or changed without a booking.
Under "Profile->Saved payment methods", payment methods can be viewed and deleted.
VISA, MasterCard and AMEX credit cards as well as the payment service TWINT are accepted in the app. More payment methods will be available soon!