battlefield bad company 2 problems

Hi, I'm MasterChif999. I had a problem with the game, when I go in to your account in the game, it asks for the product code. And when I introduce him, I reported that the product code is already in use. Since my last game took place about a year. Please help me to solve this problem, thanks in advance. Sorry for my english, пщщпду екфтыдфеу 😕mileyvery-happy: