double check your port forward settings and make sure tcp is open. if you need to specify a port range do 28000 to 28100 as sometimes BL will use one port higher than its current setting if the port it tries to take is taken. post pictures of your router settings if you can
turn off UPnP on both blockland (options, network) and your router, then try again using port 28000.
How do I specify what port for Blockland to use? I can't find it out.
Really needs a option in Networking.
No it does not. That is not where the port option should go. Can you tell me what this says in console: echo($Server::Port);