In this case, it is highly likely that you registered your account in our old Stocard Backup system. This system has been discontinued more than a year ago and was replaced with our new and improved Stocard Account system, which now offers real-time sync.
For a transitional period of about a year, both backup systems were running in parallel to make sure that all users with the old backup have the chance to re-register their accounts in the new system. However, due to the high maintenance effort of keeping both systems alive, we are now exclusively using the new account system. All users with an old Stocard Backup account will have a large orange warning hint displayed in their card list as soon as they update Stocard to any app version higher than 7.0 to make them aware of this change and encourage them to re-register their accounts in the new system in order to avoid any data loss.
If you still have access to your cards in Stocard with the old account, please contact us at firstname.lastname@example.org for assistance in re-registering in the new system.