The Sims 4 Suddenly Incompatible with Mac

I've seen similar accounts of the above issue within the EA App. The Sims 4 is suddenly incompatible with Mac and only Windows. When I select 'Manage Add-Ons', some packs are in B&W with a slash through them. However, the rest are fine. So, is this just a glitch with the update? Are the packs supposed to open once more in another app like Origin, or are the packs no longer compatible with Mac?