RAZER KAIRA PRO FOR XBOX

They won't connect to the Razer Audio Setup for Xbox app. I've tried everything and they won't sync. They connect to the console, yes, but I can't configure them through the app. The sound isn't very good; the Blackshark V2 X sound better. I can't update the firmware because I don't have a PC and there's no way to do it through the website. A total disappointment.