Question about 7.1 surround sound audio

Okay, so with my Razer Blackshark V2 X, I wanted to activate my 7.1 surround sound. But I didn’t get an activation code. I registered my headset, and I said it would send a copy of the code to my email. The email is typed correctly, I checked all the spam and trash folders, but nothing is there. I'm getting other emails, but not the one with the activation code. Please help me. I have also used the self activation code thingy but that didn’t work either