Logging in problem!

Hey everyone.
it seems like i am having some problems logging in into my account and i say that because every time i try to log in it becomes stuck on connecting or success! and if it succeed it goes into the realmlist and when i choose frostwolf it says logging in into server but nothing happens and then it cancels .
and when i go to WTF folder it shows my account and when i open it there is a file called (null) ? instead of my character names not sure what is that about but maybe it is related.


-PLES Help :3