Hmm, ok, that's interesting, I'll try to do something with it, not sure if it's something I can solve on game maker, but I will try! Mac builds are pretty quirky.
I'll write here when it's done or I will hit a dead end.
If you bought it not via community copy, don't hesitate to refund if you'd like to (I'm not familiar with this option on itch, but if it's not available, hit me up in the dm/mail, I'll refund you somehow)