Brave Is not working after update

I’m using brave for almost 3 years and not after update brave is not working( not even opening). For issue like this I tried to uninstall the privacy templates and all other files related to brave. I havent logged in once or signed for once, i was using it as guest account. Now brave is not opening. Even it opens sometime, it shows the profile picker is block, some features are unavailable or unaccessible by your administrator. I don’t know what should I do. Help me out