Ok, I managed to recreate the bug (on Windows) and analyse the problem more deeply. It seems the problem is an error 403. Long story short, itch “forbids” your browser to play the game. The bug occurred in Google Chrome; I tried running the game in Opera and it worked. So I suggest you try another browser to play the game (Opera, Firefox…). Let me know if it worked for you!
Thanks but I wish though because since this is a chromebook and it's a school version meaning I can't download anything No Internet Explorer, No Firefox, No Opera and nothing I will wait for now and not for Chrome to be fixed I'm waiting to use a different PC that can actually has other browser and not Chrome.