Sync Settings are gone :-(

I was able to set up the sync for all my databases.
This morning I wanted to change the sync settings (time, when the databases are synched) and I can no longer access the settings.
The Sync button in the preferences is still there, but nothing happens when I am clicking it :frowning:

Even a restart of the mac did not help, what can I do?


What happened last night? Were you doing system updates, etc?

Nothing was changed, no updates installed.