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I don't think it is a problem with the certification. Most games released on and gamejolt aren't from identified developers and to play them, you either need to disable Security and Privacy settings or go to the Security and Privacy settings and basically say that it's okay for that specific game to run. The problem is when I go to play it, it says that it is damaged and should be moved to the trash. I've had this happen with a few different downloaded games, but I don't know why it happens.

Still, I appreciate you trying to make it work. Good luck with your future projects.

Oh! You are absolutely right. In my search for a fix, I wound up confusing the two issues. With your clarification I was able to fix the exported MacOS app (I hope! It works for me now at least), although it still says it is from an unidentified developer, just like you said it would. I added a note to my game's description.

Thanks a bunch for your help, I really appreciate it!

I tried playing it. It says "unable to find game!!"

I really feel like I'm stringing you along and you're my personal tester at this point! :p I'm looking into why this could be the problem.   Based on my initial findings, it seems to be something that sporadically pops up with Game Maker games here and there. You may have success moving it to the desktop or another folder, but no guarantees. I'm taking the mac version down again. Really sorry it didn't work out! Thank you for continuing to try, that means a lot.

No problem. I've acted as a tester for games in the past so if you need any help in the future, just let me know.