Joanna,
I have not gone through this process so I do not have the full answer to how you can get approved. But it seems to me that you should have chosen option 3 as it’s a private label product so you are the manufacturer as well as the distributor.
Also why did you not give them the photos of the 6 sides of the product that they asked for? In these sorts of situations, you will get knocked back if you don’t give them exactly what they ask for.