Thanks for the feedback! I had no idea what you were talking about, so I went and downloaded the itch app and indeed came across the same issue that you did. I didn't even know about the app's existence lol.
Unfortunately I have no idea how to fix it and a quick google search yielded no results. I'll have to look back into this later, as I don't have time right now. But for now, the game does work either in the browser or through the game download I just added.