Oh, maybe it was because my Hub instantiated one inside, sorry! Oh, by the way, I have made the fourth version, but am trying to publish it(hope you like what you see!)
Yeah sure! You first export the WebGL build version from Unity, then zip it up. Then you upload the zip to itch and choose “HTML” for “Kind of Project”
After that, mark the uploaded file as “This file will be played in the browser”