I cant log in plis help me

Hi im new on server, im start to play on warmane last night at 8.30, and i know thers to much people in this server and when u come to login here u must wait in queue for a long time that's okay, but this morning i try to log in and i cant enter in my account to do queue because the client tells me Unable to conect plis try again later.
I wait for long time since 11 of morning to right now and the message tells me the same and i change my realm list to play other server for check my internet signal and the clients tells me the same thing Unable to conect plis try again later i test 4 realm of 4 differents servers and all tell me the same and i stop play wow this morning at 7 in your server and later when im wake uo u cant log in your server and i cant log in in oher servers too plz hel me i cant play wow now what i can do? can u repair me this?
Thank u so much and have a nice day