Fortnite login failed. What to do? Season 12?

On my PC it always shows the message "Login failed. Logging in to Fortnite servers is not possible. Try again later. I have already uninstalled and reinstalled Fortnite (also sen launcher). I have already verified or checked Fortnite. Nevertheless the message keeps coming back and I can't play anymore, how can I solve the problem?

What kind of PC do you have? It may be that he is too weak and therefore does not manage to start the game or something.

The problem is not that old yet and my pc started at the beginning of season 12. Also not everything or you could play Fortnite