Hi, as explained here: Can I use Portrait Displays?, Xibo for Android can only control rotation on a device if the device supports it.
This devices internal framebuffer is only 720p which may well output 1080p, but internally its running at 720p and then upscaling.
The DSDevices DSCS9 player supports screen rotation, as detailed here: Orientation settings for the DSDevices DSCS9 Player
Thank you