Please make sure you get our latest Launcher here if you run an older game client version than 2.0.5c and it won't work with other World of Warcraft clients:
This will automatically set your realmlist to: wotlk.wow-mania.com
When you start wow from the launcher it has to look like this:
We have also updated our client torrent. With this, you don't need to manually download the launcher:
This is probably the best option to avoid headaches.