Can't login to Frostwolf Server

Hello peeps.. =0)

I had to abandon game for some weeks to repair my PC's video, I had to remove the client from my computer, and tried to relog Pandaria server again, but after several tries in 2 days, servers appears constantly offline. I read the information about servers' population, and it says that is many people online. Nevertheless, I can't login to Frostwolf. Has the server closed, or my client just got obsolete or bad reinstalled? I checked the realmist login line in the config.wtf, the problem isn't there. Can someone who had played recently help me,please? Thx a lot... =0)

you need to use 5.4.8 client, not 5.4.2

Thx for the reply and hint, I'll try to fresh DL to that version if it works.. =0)