Hi,
As I can see in the Studio > Audio Connections, the PSR_BUS (which is in use for the Audio mono track) is using Input 1 Device Port. So either connect your PSR to Input 1 of the Komplete Audio 1 Audio Device or change the settings in the Audio Connections to Input 2.
Btw, you should use Line In, not Instrument level for a keyboard. Instrument is for direct Guitar or Bass input.