Hm, the download thing must be an issue on your end? The file is available to download and it works for me when I try. I'm seeing when I try to download it that itch.io recommends checking if you've got any popup blockers if no file pops up though, so I'd try there first! ^^
As for the browser build, I have no plans for doing that at the moment ^^; I appreciate your offer to help! But honestly, if I were to rebuild this game into more formats, I'd probably fix a lot of other things with it first and essentially just remake it into a larger project outside of NaNoRenO 🤣 I do plan to upload a full playthrough of this to my YouTube, though, once I finish editing the footage lol I hope this'll make it a bit more accessible! ^^