Couldn't get it to start in browser, I had the same issue when I first uploaded and this solved it for me, Go to: Edit -> Project Settings -> Player -> Publish Settings -> Compression Format and change it to "Gzip" and it should work with itch. ( I don't think you are allowed to do this now because the jam is over, but for future reference :) )
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Thank you so much for the feedback! I just added a downloadable version of the game so it should now be playable via download.
I really appreciate you taking the time to explain how you fixed this issue. This is our first game jam and we are still figuring everything out so this will be a great reference for future game jams! :)