Problem with item listing

I am trying to sell a rubber axe. In the photos I have included a picture where I am bending the axe head. I still had to make an appeal for the item to be listed, as the algorithm was sure it was a real axe. Someone wants to buy the item, but they are being age checked (presumably because it is still flagged as a bladed item), and they do not have a credit card with which to age verify. I have tried to change the listing to help them, but nothing seems to make a difference. How do I help them to buy my item?