Adding onto the solutions Jango provided, have you tried using a different browser as well?
yes I tried Chrome, Firefox, even internet explorer. No other applications are running and I used to play the game at home so bandwith shouldn't be a problem?
I also wait for like a few minutes (with the window of the webiste still opened) before logging in, even tried refreshing and stuff, but nope, nothing seems to help :c
Thanks for the replies though!