Can't publish

Piman

Hey guys.. a long time ago I made agame with gamesalad and now I wanted to make a new build. I can open my project, but publishing gives me an error. I have pro, but the online creator has greyed out pro started projects (not interested in them, but I wonder whether my license is being detected properly). Also, the front page shows Windows is supported, but I also read it isn't anymore?

Overall.. irritating and confusing first few moments.