D Ticket

No, not used that app, but look through the information from The Man in Seat 61" https://www.seat61.com/train-travel-in-germany.htm#Deutschlandticket

He recommends two sources, I have used Tranzer several times, quick, easy, they take US credit cards, and they cancel the subscription immediately. The ticket is loaded to your digital wallet on your phone.

Official statement of MVV in German language:
https://www.mvv-muenchen.de/mvv-und-service/presse/pressemitteilungen/news/detail/news/zur-heutigen-berichterstattung-mvv-stoppt-verkauf-von-deutschlandtickets-und-warnt-vor-betrugsversu/index.html

"It is expected that it will be possible to purchase the Germany ticket via the MVV app again this afternoon, but with two new security measures in place:

• For the time being, Germany ticket subscriptions in the MVV app can only be purchased using credit cards; SEPA will follow at a later date.
• The purchase of Germany tickets in the ticket shop in the MVV app is now only possible for the respective account holder. Anyone wishing to purchase a Deutschlandticket for another person must create a separate account for that person. It is still possible to use the same payment method. Registration in the MVV ticket shop is only possible for persons aged 18+".

Translated with DeepL.com (free version)

Purchasing other tickets on the DB site has not been a problem but the site took me to another DB link for the D-Ticket where one issue or another presented itself. Previously, since the D-Ticket was rolled out, we were able to use the MVV website/app until trying to give it a go today. Obstacles everywhere for one odd reason or another (mostly related to IBAN financial system). What worked, thanks to other suggestions on the web, was the HVV-Switch app (related but different from the HVV (Hamburg transit association), and then select PayPal as your payment method (VISA/MC did not work presumably the IBAN issue).

I also used my middle name in the registration as another place references the need to have a matching name from the official identification document, be it Drivers License or Passport.

Thanks, Mark, for the update. I’d successfully used the MVV app (iOS) to purchase a D-Ticket over the last two summers, and I was very interested when this came up.