I have the same problem, although I try to play on an extremely old laptop. I checked the console in both Edge and Chrome and found this warning in both cases: "Uncaught (in promise) Your browser does not support graphics API "WebGL 2" which is required for this content."
If other people have the same problem and they want to check whether this is the problem for them, they could google "webGL 2 test". The first link will be a site that shows whether webGL2 is enabled on their device. (I have no idea how strict itch is with links in comments.)