I just want to say (without opening a new thread) that DB has limited the payment of Sparpreis, online and maybe other tickets. Paypal and debt collection is not possible anymore, because of fraud.
In german (source Die Zeit):
https://www.zeit.de/wirtschaft/unte...he-bahn-betrugsfaelle-zahlungsarten-sparpreis
In german (source Die Zeit):
https://www.zeit.de/wirtschaft/unte...he-bahn-betrugsfaelle-zahlungsarten-sparpreis