yup, i've followed these steps! even after i grant access to open the app under my Security & Privacy settings, the app won't open. the icon just bounces once. there's no error message.
Hi! I'm a mac user as well and something that's worked for me is right click on the application and then click "Show Package Contents." After you do that, MacOS, then the exec file that says "TSP" and it should open! Let me know if this doesn't work.
The same thing has happened to me with a few apps so I found this workaround. All games run as normal even if I open them this way. Hope this helps! :)