Stuck on "Success"

When I type in my login information (In Wotlk, Cata, Mop, Tbc...) it says "Success!", but never sends me to the game. If I cancel the "Success" box it gives me a "Searching for realms" box, which also never sends me to the game. I've reset everything, and it still won't let me in. Any tips? Yesterday it worked well...

I haven't this problem when I join on blizzard servers.

Same thing happen to me. Keep stucking on success. How to fix this?

Same here, can anyone please help?

anyone found a solution to this? please help i am also getting stuck at success