Razer 7.1 Surround Sound App- Code access

So I noticed that Razer had the info on their 7.1 surround sound app. After reading it more I saw that it was available for the Razer Kraken lineup, which I have the Razer Kraken Tournament Edition, so it caught my attention. I mean dont get me wrong I love my Kraken setup but having been a Razer fan for a long time I am always happy to see new apps they release for devices I own or plan too. The site says the code will be included with new headsets purchased, and for anyone who has one that didnt get a code to register their product.
This is where the confusion hit me, I have my Kraken for a decent amount of time now, and it obviously didnt come with the code, but I've had my set registered since I got it, it is not possible for me to access either or those steps. So, what are we supposed to do in this situation? I mean The Kraken Edition I have already has THX button on the side, but in Synapse 3 under headset I can't select THX for most of my games and other uses?
I am just confused on the option for Insiders & regular consumers who have the products mentioned but the instructions lack any clarity. I could have missed something when I read through everything and if I did I'm not afraid to admit "my bad" and be accountable, but did I miss info? If I didn't what is the suggested path?

I just got the new 2021 Razer Blade 15 QHD with RTX 3070 in it, and love it. I mean this thing is a beast so getting the max benefit from my other peripherals is preferable.
thanks
Reaper IWP