[bumblebee]

I would uninstall MS, shut down, then startup the tablet, then install, before restoring from any backup because something might have been corrupted, perhaps inadvertently locking the database file so you cannot see anything.
If you happen to have even another tablet without MS on, install MS and test one of the backup files.
Best wishes.
I have a backup tablet as you do, because I never trust them. I also have a small number of paper copies that will get me through if needed. Usually they are in the car if I'm driving to a gig just in case.