I tried to clear all user data for RobinHood off my phone this morning and login fresh. At first I got absolutely nothing, but eventually my stocks and options came up, then my watchlist. However the watchlist was missing everything I added to it yesterday, though if I look up a symbol directly it does show as added. So I think your theory of restoring from backups has some merit. I wonder how they'll reconcile any orders placed/executed after the backup was taken if that's the case.