Hi Everyone! I have the same issue. Instagram approved the commerce account, but Facebook denied it twice. I have no ability to even go in and ask for another review. We sell paintings and have zero issues with our products. It is insanity trying to get this shop approved. Now I am locked out from asking for another approval for our Facebook commerce account.
I contacted Shopify to see if they have any information on this issue and they have been getting several calls. Facebook is aware of the issue from denying commerce stores for no apparent reason.
YOU CAN SUBMIT A TICKET TO FACEBOOK TO REVIEW !! submit a ticket at www.facebook.com/help/contact/commerce good luck!! Everyone should start submitting tickets to Facebook so it forces them to fix this issue quicker 