This application is broken, backup should be uphold and you should be always synced with it.
Until brave stops this internal wallet bulls**t people will lose money to bugs, and browser uninstalls and all sorts of “accidents”.
I have very weird stuff happening every month, always seems to be a new “surprise” every month, getting really annoying to use this browser really (like this: Brave rewards not transfering to uphold on one of my computers).