All add-ons "Not available for purchase"

I'm not able to purchase any add-ons for the Sims 4 - I've cleared the cache on my EA App, restarted, tried purchasing on the EA website. I can't get the new Adventure Awaits pack (or anything at all) because of this error. This is a recent occurrence - never had this issue before but I updated my payment methods just in case. I'm on Mac OS Tahoe, have no mods and playing in the UAE. It's been weeks and unfortunately not resolving itself. Could someone help, please? Thanks!