Allowing "Screen Share" for the app on the Oculus Go

Hi guys! I am totally new here and I hope someone can help me. 

I developed an app for the OculusGo, and while trying to use the "ScreenShare" function, the HMD tells me "This content can only be shown on the headset". 
Is it a configuration problem? Or something completly different? 

I also tried connecting via ADB and running the screenrecord command 

adb exec-out "while true; do screenrecord --bit-rate=8m --output-format=h264 --time-limit 180 -; done" | "C:\Program Files (x86)\VideoLAN\VLC\vlc.exe" 
--demux h264 --h264-fps=60 --clock-jitter=0 --network-caching=100 --sout-mux-caching=100 -

But VLC just keeps loading and won't work either. 

Thank you for your answers!