Hey @n33k33, if you host your own server at home and register it to the open net lobby, it is not enough just to have the gameservers port open on your host. It also needs to be open on your router and you have to setup portforwarding from your router to your host which runs the gameserver. Otherwise, your servers appears in the lobby, but is not accessible from the outside world. Important is also, that the gameserver starts with an option "-externalip" which has to be your WAN IP (you can figure that one out for example by looking at https://www.whatismyip.com/). With many ISPs it changes every 24hrs, so without further adjustments the server might became inaccessible from the internet if it runs longer. I know it is difficult to setup that at home, that is why I added a few default servers for some popular gamemodes to the lobbies server list which may be used anytime.