Serato DJ - Master output level missing with an DJM S9

Hi Guys ,
I've recently lost the master output display , it has gone . I noticed this after upgrading to 2.2.2
I have downgraded to earlier versions but it's still not there . 2.2.2. could be a coincidence but I'm just not sure what to do

The display is there when I disconnect my S9 and it's there when I plug in the Denon MC7000 ?

I'm puzzled