There is a small bug with the OMV-Backup plugin. When configuring / making changes from the OMV-Backup plugin, the GUI does not prompt to save/commit changes.
This can be confusing, because for example if you are initially configuring a backup and try to run the backup, it will error and say that the shared folder you selected does not exist.
As a temporary workaround, I just make a insignificant change somewhere else in the GUI to force a save/commit prompt.
I'm not sure the best way to report bugs like this so please let me know if this is how we should report issues or if there is some other procedure.
Thank you