audio razer 7.1 surrpund sound app

hi reazer team . I bought a Razer surround headset, but I did not receive the code to activate the surround feature. I only received a card with a barcode on it to do that. When I enter it from my phone, it takes me to the site. How do I want to activate the feature without a barcode and from the card? I have the card with it written SCAN the QR code to download and unlock your free Razer 7.1 surround app activation code via Razer ID registration and next to it is the barcode. Can I get help please? Also I can't hear it on my computer but on PS5 and other devices I can hear my friends' voice and they can't hear me only the game's voice