Greetings @Foxtrot-007 ,
We did see some issues to accessing Conan on steam during the beginning of this week, however that seems to be solved and we can see players accessing the game.
If you don’t mind could you try to reinstall the game and use the “Change Account” option on steam?
You can log into your account right after, it’s just to force the account sync.
Hope this can help you!