Sorry for the delayed response, and also sorry for my answer - the app probably isn't going to run on a modern mac at all. There was a thing you could in the terminal to make it work, but I don't know if it is still viable.
The truth is I can't make builds using my older macbook that can be notarized and code-signed. Unless I get a bunch of money for a new mac, or apple stop being so hostile to solo-devs that aren't mac-focused there's not much I can do. My next game won't even have a mac version on itch because of this...
Anyway I'll make the notice about macOS issues on the store page more bold and noticeable.