Sorry to hear that mate. Would appreciate if you reported a bug so I understand what's the scenario where it doesn't result in a backup. The worst case scenario I'm currently aware of (beside the add-on not being enabled) is that if no valid paths are specified, it falls back to system temp folder, which on a Linux machine will get wiped if your PC hard crashes. Anything outside of that failing should be reported as a bug.
We need the update for Blender 4.4.1 thank's
Don't work... It saved everything EXECPT what i wanted. So i lost hours of work