Cannot coneect Frostwolf MOP, error

I have another error, it says that I have bad connection to internet but I can download 250 kbs, I can see fresly videos on youtube and other online games works fine for me, just wow is giving me problems.

My screenshot error.
http://imgur.com/kYAKuyk

If the first link does nt work
http://i.imgur.com/kYAKuyk.jpg?1

I dont know what to do, I tried almost everything, disabling my router proxy, firewall, windows firewall, renewing my dns and ip; even another wow expansions works for me, only this Frostwolf does nt work for me -_-

do you locked some of your network ports of my ISP Claro?

Uncheck "Read Only" on your Mists of Pandaria 5.4.8 folder settings