I like this browser but this problem is something that I've had to deal with since installing it. None of my account login information is being saved and I have to manually login (and confirm ownership of said accounts). Sometimes Opera will keep me logged in for 2-3 days but most of the time everything gets reset upon restart.
This issue is only on my PC -- I have a laptop and everything works fine on there. I have enabled cookies and sync data. Not sure what to do here.