I dont have mac, but i know there is a zip that you put in run that will make your server dedicated like mine
I forwarded my ports (on my old computer) in V8 will they work now for V12, I guessing the answer is a BIG yes, but just to be sure.
I don't know about the Mac-version of blockland, but I have a feeling this .zip is located in the Blockland folder.I think this because in my Blockland folder, there's a dedi.bat which lets you run a dedicated server for Blockland.
In the mac version of blockland, there's a dedicated.command