Update : 2017iPad Pro gen 2
Purchased new keyboard - worked once for few minutes - then flat nothing. Used logitech keyboard for few days.
Tried original iPad pro Gen 1 - works on new keyboad , hmm odd. Old key board also works on Gen 1 iPad .
Updated to 11.2.6
Tried new keyboard - still doesn’t work on Gen 2 iPad , out of frustration with using logitech keyboard thought to try old original keyboard - now it works ! In fact typing this on it.
So I have a brand new keyboard that will only work on a gen 1 ipad pro - but now my old 2016 keyboard works fine with my gen 2 ipad pro - no more accessory not found mesages or disconnects.
Compeletly baffled ~ next time back in the US will take new keyboard to a store and see if I can get an exchange or refund.