Unable to acquire a 7.1 surround sound activation code

I bought a razer blackshark v2 headset a couple years ago and had no problems until now. I used the activation code and threw the packaging away since I wouldn’t need it anymore. Now I recently erased my computers memory  and I can no longer use the 7.1 surround sound software because I never bothered to make an account when I was using the software and the code was never saved. Its asking for a code now and I have nothing. Is there any way I can get an activation code or is my headset now useless?? I no longer have the serial number or activation code as it was all thrown away a long time ago and can’t be recovered. pls help