We've now resolved the incident. Thanks for your patience.
Apps of affected databases are back to normal. Only a few are in write-only mode.
We are still moving things around in the background.
There are new problems right now. We are looking into another mitigation.
We think to have fixed the issue and are now monitoring the situation.
Mitigations are under way.
It affects a small number of Universal Apps in EU. The current state is on/off.
We are investigating issues with MySQL in EU.