Thaaaaat, isssss, weird.
You can ignore the yellow warnings, those won’t stop you. But the red is very weird.
Try re downloading? Maybe you got a corrupted file. I don’t have any bright ideas otherwise, I’m afraid.
Hey since the website demo works fine for me, you think you could make a website version of the full paid version? Maybe have some sort of keycode system or something like a Steam key in order to make sure only those who paid for it can play it? Or is that just not possible for some reason?