Products rejected by facebook

I have an ecom website with around 200 products. I run ads with carousel ads and single product ads as well. Facebook has rejected some of my products (due to the policy actually they are not but we know Facebook) which I can see in product catalog. Those products will not be shown up in the carousel obviously. But if i create single product ad of that product? Asking this because recently I see one product in the rejected list and that product ad was running with a good conversion rate but I stop it. what would be the suggestions under these circumstances.