The worst service ever!
Was trying to register to Flinkster, paid the registration fee and provided an ID with different german address than the current one. The registration got declined with "daten stimmen nicht". Now for 6 weeks I'm just receiving unhelpful emails, no refund, can't try to register again because my driver license is "already taken". Can't imagine how they would handle real car issues...
UPDATE: guess what! There is no "delete account" option available in web or mobile

Reply from Flinkster - DB Carsharing der Bahn

