When you said in the product description that you did not know if they were genuine, then the purchase of them by anyone was with that knowledge. You're not in the wrong and owe no refunds to anyone for that reason alone. If they give you negative feedback for not giving a refund, respond to it in the feedback section and say that you clearly stated that you did not know if the product was genuine and also stated that you offered no refunds.
That makes a dif to people ordering if they can check that.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.