Hello ts678,
thank you for all your input.
Look what I found:
My wiki says that we had similar problems 1,5 years ago:
Seems like uninstalling and reinstalling is the way to go(?)
What user do you want Duplicati to be running as, and where do you want the databases?
I don’t have a preference concerning the user, as long as I have a system tray icon. the folder /home/dejhost/.config/Duplicati/ makes sense to me, but not that important either.
Was there a run just before install?
Some small and local backup-jobs run every 10min. THe ones using sftp run daily.
If you have systemd and also start one to get a tray icon, then you have started two Duplicati.
I definitively had a tray-icon.