Has anyone had this problem, I'm being told my book which I'm selling on Seller Central via FBA can't have A+ content because (1) it's in the book category (I have a professional plan and I'm successfully enrolled on Brand Central) and (2) it's not being sold via KDP. In addition, advice from Amazon support has constantly been contradictory and the service has been beyond disgracefully poor. One minute they say I can have it, the next they say I can't

To top it off, today my description and cookbook category I was in was removed (but that's a whole other issue). I'm pulling my hair out here!

I don't understand though, there are many other cookbooks with A+ content which are not being sold via KDP. How are they managing to add this A+ content? Has anyone had any experience here?