So I downloaded DCUO, subscribed, and went to try and download the DLC, and it gives me that message. I can download anything else except the DLC, I don't have more then one account, I have a valid CC# (although it's free.). The only thing I've changed is my billing info, and log-in p/w. Does anyone know what the problem might be? I don't game share, or do anything that could put my account at risk. I'm out of ideas. Any help would be great, thanks.