At blender.org you can download blender publisher and apparantly the key too but I have no idea how to get the key to work that they have there because it isn’t actually a download just a series of numbers and stuff.
My question is, am I just doing something wrong with the key or do you still have to pay for it?
To get the key you can copy and paste it into an editor, like notepad. Then just save it as key.dat in your Blender folder. Then open Blender go to file and load the key.