I tried to log out and log in again...
First I started Osu and logged out, then I couldn't log in again so I restarted my computer.
When my computer had restarted, I tried to log in. It worked! Kinda... I could play online and stuff, but I could see any profile pictures and on singleplayer it could not retieve my scores.
Then I tried to close Osu, I still had the same problem where I couldn't close is for some reason, so I restarted again.
Now we're back to square one because I can't connect anymore and Osu doesn't want to close, I can play online now with that little trick but then I can't see my scores and it's only a temporary 'fix'
It also still causes my browsers to be really slow...