You will have to contact the seller.
Ebay give you 30 days to return an item using the Ebay Money Back Guarantee, after that, it's between you and the seller.
As you have bought an item online which is not fit for purpose, your payment provider might be able to help.
"There are two ways to be fooled. One is to believe what isn't true; the other is to refuse to believe what is true.”
Søren Kierkegaard, Danish philosopher (1813 - 1855)
