Is this going to be a problem? Several people are commenting on the fact and while I have outlined the necessary steps to get it to run, I am aware there is some background knowledge required to go through the hoops. This is my first ever game upload here and I think I now know how to change it to do what people expect it to when viewing the submission but it requires me to reupload it and as reviews are already ongoing that would not be possible anymore.

It's unfortunate. The best you can do is host the game on another site, so you can redirect people to there.

The main requirement of the whole game jam was that the entry is playable in the browser on the Itch page...