It is a really simple fix. In the Routing menu (home page), you have probably assigned the S16 for the first blocks of 8 inputs
thought I had this figured out guys but just trying it now. Should be easy but not working. Have channels 1-8 set to input from S16 however channel 4
Making software GUI's re-sizable is quite a pain guys, especially if you don't start off thinking about it.
The controls that Behringer are
If the screen resolution is to small for the xControl, like on some smaller laptops, you set the desktop to a bigger vertical size than the screen, and
If you are soloing the channel it is in mono. Any point after that it would be in stereo.