Sure, I'll remove the shield and play normal killerball. If you're wondering why it's not up most of the time, it's because I can host it for several hours without anyone joining.
Someone already told you that the servers are (for the most part, at least) dead. Don't take offense to this, we're telling you so you know.
Perhaps look into your firewall, or your router info... something. It's dead.
Edit: Oh, and it isn't just because of what you're hosting. People join my server all the time with the name "Jerkface's Go away..." <-- this doesn't sound like I'll be having a deathmatch, a freebuild... anything.