Are konami yu gi oh cards genuine cards or are they fake?

i sold a konami yu gi oh card on ebay.now the buyer wants her cash back.she says its a fake.i disagree.she says genuine cards dont have konami on the back,they are blank,she says the hologram isnt in line so its fake.can anyone tell me why a konami card is a fake and if she or me are right thanks

Are konami yu gi oh cards genuine cards or are they fake?
Your right because i think all the genuine cards have konami on the back





I had two genuine cards and onw of them have konami at the back and the other one doesn't have any
Reply:Yes they do have konami on the back because the only thing that doesnt have konami are the egyptian god cards and thats it. It also shows if there fake or real do to that most other country are trying to copy the actuall game