Keys still playing single notes under chords when playing chord pads

I recently upgraded to Pro. I have used chord pads before but now in PRO when i hit a key to fire a chord pad theindividual note of that key is in the mix too: often out of KEY, for obviously reasons (pun intended!)
I imagine there is a setting I am missing. Hope is a quick fix!

Set the MIDI input to “Chord Pads”.