View through pimax 8kx shows just part of the screen

Hi,

I am using Pimax 8KX and my problem is the pimax seems to show just part of the screen, specifically when launching a class, the buttons at the bottom (the yellow one to fly at the beginning and the blue one to repeat the class or to go back home, etc) are not visible. I have been pointed out some videos of settings for Pimax, but the gentleman in the video uses the Pimax VR experience which is not generally available (do you know where to find it?) .

Anybody else hadthis problem? how did you overcome it?