Left deck not playing

Hey guys, I use an XDJ-RX every week at my residency, and lately the left deck in RekordboxDj  isn't being recognised by the XDJ-RX.

This is the second week it has happened.

I've updated firmware and all required updates for RekordboxDj 

But still I have this issue.

I was forced to use Traktor tonight at my gig . which was cool because it worked flawlessly all night (6 hr set) but I'd rather use Rekordboxdj as it's supposed to be the software for the unit. (And I had just paid for another month of use)

Any thoughts?

Al the best

Ian