Why do you need help? The game isn't supposed to pop up when you run a dedicated server. That's the point.
Yeah.
Here's what happens when you run a dedicated:
A Blockland console window comes up.
It executes every addon enabled (has a value of 1) in Blockland\Add-Ons\ADD_ON_LIST.cs . This can be changed in notepad, or you can open blockland normally, click start a server, click addons, and check the checkboxes you want. Then exit and start your dedicated.
Then it loads Bedroom as your map.
Then it gets to your "sending heartbeat to master server". (really "Posting to master server")
After the console reaches this point, the server should appear on the Join a Server list, and people should be able to connect to it if you have the correct ports open.