Zardanthefox
I believe you have to unlink your Steam/Epic account from your EA account. I've moved your post to the EA App Tech forum, hopefully someone here will be able to help you figure it out.
Zardanthefox wrote:
It is really annoying that I essentially have to buy the same thing twice
Yep but Steam is a completely separate storefront to EA App. If you had used EA App on the Windows machine you wouldn't have to purchase them again (not cheerleading EA App, just explaining 🙂). Steam are a 3rd party and don't make a macOS version of the game available.