What I posted earlier:
It’s genuinely concerning how difficult it is to download your demo. You likely don’t want such a huge obstacle keeping people from trying your game.
Fix the download link, make it one working link, and host the files wherever itch.io recommends to make the game installable through itch.io’s desktop installer. Fix these issues and you’ll be doing one less thing to hurt your game getting an audience.
At very least, don’t package the game files in a .rar file, that’s ridiculous. Compress as a regular .zip file, those are ubiquitous and recommended: https://itch.io/docs/creators/getting-started#content
Good luck.
I wasn’t very nice in this comment, and I apologize for that. But I wasn’t mean, either, and I only wanted to help.