Quick tip, perhaps put the demo link up the top of the webpage as well if you want to get feedback.
Otherwise it looks like a paid only game until you scroll down.
Thanks for taking the time to share this.
Honestly, I tried to do this from the moment I first created my page, but I haven’t been able to figure it out. Even after reading your comment, researching it some more, and playing with the settings, itch.io doesn’t seem to allow me to place a demo button at the top next to the purchase button. To compensate, I made sure to call out the downloadable demo near the beginning of the page.
But since you took the time to comment, I’d love to provide you with a key to the full version.