Ok, I tried re-installing Blockland for this, rebooting my router, and stopped launching Blockand through Steam, nothing seems to work. When I host with UPnP (same goes for with forwarded ports) only one person is able to join, then no one else is able to. Example:
Blockhead15000 connected.
Blockhead1500 disconnected.
[IRC Message from Blockhead1500: I can't join your server]
Or say Blockhead1500 stays, no one else is able to join after one person enters the server, wether they stay or leave. I have the player limit at 8 so more than two people should be able to join. How can I fix this?