2017 MacBook Pro can't connect to Korg microKEY Air Bluetooth MIDI controller

My new 2017 MacBook Pro can't connect to my beloved Korg microKEY Air via Bluetooth. It does work via USB MIDI. Anyone have any ideas to get Bluetooth working? TIA

Rig:

15” Macbook Pro purchased 12/13/2017

2017 model running macOS 10.13 High Sierra

3.1 Ghz Core i7

16 GB 2133 Mhz LPDDR3

Korg microKEY2-37AIR