Use google to look at the specific item and any safety recalls.
Ebay have an obligation to tell you about any potential safety issues and product recalls.
Sellers never seem very willing to deal with their buyers and the seller may not be telling you the truth.
I would trust Ebay and stop using the item in any case.
"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)
