Re: Sims 3 Mac can't download DLC
@popcorncandy6 I've moved your posts to their own thread in the Mac forum since you posted in a Windows thread.
In your Origin game library, do Seasons and Generations have Download buttons underneath them? They'd show up under Sims 3 > More > Expansion Packs. You may have multiple entries in your game library, so keep scrolling.
If these packs only show as Unlocked, with no option to download them, please see this post: