Help please, I can not login

Help please, I can not login
Since Yesterday I am presenting a problem in being able to enter to play. From a moment to here I try to enter my account with my Pc in my house and I can not get past the part where I ask you to choose a Kingdom. I choose but not enter. Delete my old WoW and lower the server but still present the same problem.
I asked a friend to log in my house and my account was a success but in my house I can not enter.

Does anyone know anything about this or what should I do in the serves to talk to the Gms del serve? please help.

I'm from the Lordaeron Kingdom.