Return to game after few years, cant log in

Hi.
I just restored my account but cant log into game. I Downloaded game form site, checked all filles with "set realmlist..." and tried to log in. When i tried to log in it just says CONNECTING and after that "unable to conect, visit blizzard game site etc". What can i do? Forum does not have answers to this problem.

what realm ?

I try to login itno Lorderon. Back then i dont remember which server i played. I was suprised i have an account here. It says i made it in 2014.