starting two weeks ago or so, it was not possible to pay for Aedict Ultimate. The reason for that is that I deleted my old payments profile in Google, not realizing what kind of mayhem it would cause. After some messages with Google support I realized that the only way forward is to create a new Google mail and port the apps there (!).
Luckily, that is now done and the payments should now go through without any issues.
Thank you so much for your kind support, and I apologize for any troubles caused by this outage.