Black screen, steam VR still running but nothing shows on the phone

[pth17102000]

i bought full version of rift cat, i tried it in demo but still have black screen, then i bought a full version because i thought it might fix the black screen error but nothing happen, software can connect to the phone, steam VR on and still can use compass sensor of the phone but nothing shows on the phone, black screen only, i tried many way but nothing can fix it

[kunamiro]

same