Unexpected Login Session Errors -Reinstalled, repaired, ?

A friend of mine has suddenly been getting these errors trying to log in.

We uninstalled LoL twice and then reinstalled it.

Then used the hextech tool and used it with no luck, some other tricks https://boards.na.leagueoflegends.com/en/c/bug-report/kEm41NVo-unexpected-error-with-the-login-session? https://support.riotgames.com/hc/en-us/articles/224826367-Automated-Troubleshooting-Hextech-Repair-Tool

Nothing works yet