FIXED Why does my server show Online in the public list but no one can connect?

EDIT: Changed the online stuff a little bit and now the Public server status is based on whether or not it can see your server. If it's red (offline), it couldn't connect to your Mine Control IP and port.

The Public server lists shows the last status that each server itself reported. The saved server list tries to actually connect from the device to get the status. So your server that you're running checks in every 30 minutes with the online database and indicates if it's online or offline. It's a little misleading because the online database doesn't actually check to see if it can see your server.

I'm going to look into changing this so the online service tries to connect to them to get a more accurate status.