Unable to connect.

Hello,

I downloaded the whole wow client yesterday due to error#134 popping up every time I entered Nagrand and Terrokar Forest. After I downloaded the client again, I can't log back in the server now. Every time I try it says: "Unable to connect. Contact Blizzard support...etc." My realm list is set correctly and everything is fine (firewall is 'a-ok'). My internet is working fine as well (how else would I be posting this). Can anyone help me please?

P.S. I downloaded the old WoTLK version and play on Lordaeron server.

remember to use the Warmane's AccountName, not Email address, in order to log-in

@skullbashat. I appreciate your effort in helping, but please don't assume I don't know anything thanks.