I just tried starting the browser version of the game, but unfortunately it does not start because of a compression issue. I had the same problem, so please allow me to explain how to solve it:
Open Project Settings under Edit in the Unity editor. Then, select the Player tab. Click on the WebGL icon to open the WebGL settings. Under Publishing Settings, change the Compression Format to Gzip. Thereafter, create a new build and upload to Itch.
I am looking forward to playing your game!