Geographic Sales Restrictions?

Hi, everyone. Thank you in advance for any help you can provide. I recently added a couple more variations on a listing that we’ve had for years. (The new variations are still MF but the rest of the items are FBA.) Shortly thereafter, I received a notification Listings Subject to Geographic Sales Restriction. After a few back and forths with SC, now they are saying it is an age restriction thing. Even tho the notification doesn’t say that anywhere. Anyone know what they really want here?