Can I use an existing game as model for new Market Item?

Hey there again, fellows. As I continue my convoluted path to first publication, a fear has started to grow today in me. After having worked on a game for 4 weeks straight, almost everydone, do I really need to redo EVERYTHING in a new one? -> For a second, I thought that Roll20 was better than that. In Edit Item Properties , there is a box called "Base Campaign", so I selected my polished game, then I click on "Create game with module" and all I get is an EMPTY GAME. Did I miss anything or is Roll20 that trash? Everywhere I look, no clue about this topic, no answer, no hope.

That button will not work until the game is approved.  It is also stated here .

Oh thank you. This is so unintuitive though. When going on the assistance center, I missed the line that redirect to the partner center. I wonder why it is not just a button among the initial list but whatever. The work continues !