I have the exact same blank view as in the video... What do you mean by bootcamp?
Anyway to give more detail, I installed the app days ago (before received my Rift S), en succeed to use the app to create my account without any problem. But have this problem only since today. So I never configure or connect any headset to my account yet.
I tried to reinstall and repair, none of this work.
I'm going to dig into it more tonight. I spent all night on it and did everything you mentioned too. The only thing i didnt try was to install the software on another drive other than the C drive (like an external SSD). Not sure if that would make a diff or not but it's worth a shot. I'll post here if I make any headway on my end.