Unreal Remote 2 App without UI (iPhone12pro and UE 4.26)?

IHello,
I have installed Unreal Remote 2 App on my iPhone12 and there is only a screen that I can navigate with fingers, but no UI and not using the iPhone movements.
What’s the reason?
(Virtual Camera GameMode in UE.4.26.2)

Also tested with an iPad,
connected with VirtualCamera2Actor, LiveLink to CameraTransform > Result: Viewport VirtualCam not moving
Message: “Can’t evaluate frame for CameraTransform”. No data was available