The latest version of Guitar Hero launched in 2015, with a new interesting feature called Guitar Hero TV. Rather than having DLC, Guitar Hero TV was essentially a streaming service that enabled players to stream music on the channels and play along as they see fit. Some might even call it a selling point to the game that Activision seemingly agrees with as they offer refunds for a very narrow window of buyers.
Guitar Hero publisher announced last summer that they will be ceasing the service, but the news might not have gotten out to everyone. So for all players who bought the game in December this past year before Guitar Hero TV closed down on January 1 is entitled to a refund for the game. You’re left with the songs on the disc, but you get your amount back.
In order to submit a claim, you have to show proof of purchase to Activision, who will send you a gift card for the purchase price. If you don’t have proof, they’ll try to verify it on their end. But if you bought the game in November, you’re out of luck.