The mac binary is named `cytopia-osx`, but interestingly the latest OS X (Catalina) is unable to run it. Cytopia actually requires OS 11 or higher.
You can't use this version of the application "Cytopia" with this version of macOS.
You have macOS 10.15.7. The application requires macOS 11.6 or later.
The "X" in OS X means version 10.There's no real issue, sorry for the confusion and good luck with your project!