I have a facebook shop currently, but I'm having issues when running it in unison with my standard website shop,... if an item sells in one shop the stock level in the other isn't affected, and I'm worried about possibly over-selling because of this. I'm wondering is there any kind of cart that integrates with facebook that can also be used on my website, where both shopfronts would run from the same admin centre & stock levels would reflect sales from either storefront?