EA Play is not available for Mac - How to download The Sims 4 and DLC

I have a MacBook and I downloaded origin onto my computer and then purchased sims 4 but in my game library it comes up with a grey tint over it and won't let me download sims so that I can play it. when I click "Buy game for Mac" it takes me right to where it gives me the option to view trailer of visit library and I keep searching for ways to download it or play it and I keep going in circles on origin. Someone please help asap I just want to play sims!