7.1 Surround activation code

Hello. I buy razer blackshark v2 pro and didnt recieve any activation code for 7.1. I allready registered my product. Iam trying to get this code for years but never to succede. First I buy kraken 7.1 chroma but back then i think those heaphones work great without the softwere then I buy kraken and never manage to get the code even when sending a ticket to support. This are my 3rd headphones from razer I hope after 5 years somebody will see my thread and provide me with some informations. o_O