It is difficult to make a diagnosis from a distance. Please check if the source on your monitor is set correctly using the buttons on the monitor. If you are using the HDMI part of the cable on the monitor, select HDMI on the monitor.
This should work, as HDMI 2 can support older versions of HDMI, but not vice versa. In any case it doesn't for a specific reason, you can contact us by email. :)