Hello i have a Razer BlackShark V2 X headset and i wanted to get the THX Spaitial Audio but the 50% off promo code doesn't work with the app, and with the 7.1 surround sound everytime i try it it says “Sorry, this promo could not be applied.” so i was wondering was this code only a limited promotion? I also saw that everytime i go to the code section it always gives me the same code so not sure if that has to do with anything. Any ideas of how i can fix it?