You cannot download the Mac version of a game onto your Windows PC and vice versa, Origin won't allow it. Do you mean that you purchased the game from Origin's website, using a Mac? That doesn't matter as you purchased the game, not a platform specific version so it will show up...
My system (macOS Catalina Beta 10.15) and my games through Origin have all been updated. Today when I tried to play TS4, I got this error message: I'm not sure if there's anything I can do at this point? I read certain posts saying TS4 won't be able to run on certai...