Rejected from server. Help please.

Yesterday while there was an event, my computer restarted while I was playing then when I tried to log in again, I keep getting this message "Rejected From Server" and I can't even access the control panel and the page just displays the message "Denied" whenever I try to access it. I tried logging in my other characters and same thing happens. What the hell is wrong?! Can somebody help me please! I can't post in the new forum since it is under maintenance. GRRR...

IGN: Misunderstood