Welcome to the forum @student600
What does About → System info say for BaseVersionName and ServerVersionName?
What OS is this?
Do you recall what you updated to? The symptoms suggest 2.0.5.1 to 2.0.6.1, then 2.0.6.1 didn’t stick.
EDIT:
I suppose you could start looking into see what updates are installed. There’s an OS-dependent list at
Downgrading / reverting to a lower version
If you’re on Windows, you don’t have a service install if you just used the GUI installer from the .msi file.
If you’re on Linux, you would either install the package and let systemd start it, or start it at a user login.
It would be helpful to know how you start Duplicati and whether it runs as you or as some system user.