I bought the game for my MAC cause i didn't have enough space on my phone. Then I clicked the make download waited 3 mins for it to download. Agree to the terms of service. Then I get to screen that says the games title and tells me to drag it into the app folder which i do. Then i double click it then a warning pops up tell me the game is damaged and cant be opened. I've shut down and restarted the computer multiple times, and I've re-downloaded it many times what have I done wrong?