Thanks for the info. Not sure but the app usually has problems. I would just download from the site, and run it as usual.
I did last night. It's short but fun.
In order for the Itch.io desktop app to know how to manage the game's files you need to mark which operating systems the game is compatible with.
In this case, go to the dashboard, and tick the Windows checkbox next to both the demo and the full version.
Ahhh, thanks for that.