I purchased Norton Security Deluxe from what seemed like a reputable eBay seller. I received the retail box with card enclosed containing the product key code. It seems to be an official product. When I enter the product key to start my subscription, it gives a System Error. I called Norton to see if they could help. They told me the product key I entered was not activated by the merchant. After a couple attempts at reaching the eBay seller, I have not received a reply. I am beginning to believe I may be out the money I paid. I do have the original box with the bar code and various numbers printed on it. Is there any way of activating a product code key if it was not activated by the seller?