When I try to open it on my Mac it says that I don't have permission to open it and tells me to contact my administrator, but I am an administrator on my Mac. Does anyone know how to fix this?

If you're still having problems with the Mac versiontry using this to unzip the game; https://apps.apple.com/us/app/unzip-one-rar-zip-extractor/id1127253508?mt=12