I purchased Cats & Dogs, Seasons and Cottage Living expansions through Steam and linked my account to EA they're all listed an unavailable as they're on a windows license.
Is there any way for me to get this unlocked for Mac OS so I can play them on my MacBook?
ponyshorts Steam only offers the Windows version of Sims 4, and therefore any content you own there is also only available in Windows. You'd need to purchase the content again through the EA App, or through a website that offers codes to redeem in the App. (Make sure you're only buying from authorized vendors so you don't get a bad code.) To buy from EA, you might need to unlink your Steam and EA accounts.
If you've only recently bought the content in Steam, you may be able to get a refund from Steam considering the content is incompatible with your device.
