Connectivity Issues?

I was just playing last night and having no problems but when I logged in today it gave me a terms of conditions list and then after I had pressed YES it just said "this account needs to be converted into a battlenet account" please go to *link* to begin conversion...

EDIT: FOR SOME REASON MY ACCOUNT WORKS ON CATACLYSM BUT IT STILL GIVES ME THE ERROR WHEN I TRY TO LOG ON THE PANDARIA FROSTWOLF SERVER

check the realmist, is logon.warmane.com ?

yep it's Set realmlist logon.warmane.com