The backup feature is useless. I had to reinstall the app because it was crashing. After new installation I logged, it loaded my mouse with default settings. When I wanted to restore settings from backup, I found out that a minute ago it already saved the new (default) settings and has overriden my backup.
I had another backup, old a year from different laptop. But that couldn't even restore and app crashed.
It is essential to save at least a few different backups from the save PC, because it is now not possible to restore settings, as they are immediately overridden by default settings.