09 Aug [Notice] USB Camera Connection Is Not Supported in Android 9(Pie) Now.
This is CameraFi team.
CameraFi cannot support USB camera connecting feature in Android 9(Pie).
If you’re connecting USB camera, please do not update your Android version to 9(Pie).
We are reviewing a way to make USB camera compatible with Android P version.
Sorry for inconvenience you might experience.