I had a similar problem while configuring Camelot App remote control features. It turned out that the "Keylab MIIDI IN" midi source does not export DAW-related functions (like play/pause, stop, record) messages, but IT DOES send regular notes and ALSO faders/knobs messages. Of this I am sure because I actually programmed faders to control the layer's level in a Camelot scene. I had to create two remote control profiles:
a) One linked to "Keylab MIDI IN" input to assign faders/knobs
b) One linked to "Keylab DAW IN" input to assign DAW controls to functions in Camelot like start/stop backing tracks.
So, even if when connected by MIDI cable the Keylab only expose the normal "MIDI IN" interface, it should include fader/knobs MIDI data... Unless that, by design, the Keylab is not exporting CC messages over the MIDI cable, which would be really weird.