Hi there!
Thank you for the detailed report and sorry for the issue. Unfortunately, the game is currently incompatible with Catalina and later MacOS versions.
Some players have been able to play it via Wine (a Windows emulation software for Mac), so it might be worth a try.
In any case, if you purchased the game and want me to refund it, send me a line to support @ octavinavarro.com and we'll start the process.
I'm so sorry for the inconvenience.