Welcome to the forum @CrypticWalnut
If not yet on current Beta (2.1.0.2), the 2.0 Duplicati can have updates elsewhere.
Please check About → System info. Is BaseVersionName = ServerVersionName?
If not, Downgrading / reverting to a lower version original post has some locations.
Task Manager, Details, right-click header, and select Image path name works too.
Older versions used the Program Files programs as launcher for the latest version.