At this time our German name server ns3.de.opalstack.com is offline for emergency maintenance.
The other 2 German regional NS are still online and domains that use those NS are working, but since we're not able to push system updates to ns3.de.opalstack.com there are several pending control panel operations that cannot be completed until the server is back online.
These items will be finalized automatically once the server is back online.
Update: The server is now back online and updates are back to normal.