I own a VU+ duo 2 and there is no display, on the right hand side, of the receiver, as you face it. There's a pull down flap, for cards, and cams.
On the left, is the clock, and in the middle is the other display, containing channel info, and various other things.
Have you tried turning the receiver, off, using the toggle switch, on the back, then on again?
I'm running OpenBh 5.3, on my Duo 2.