Always when I use the Digitone in an Ableton Liveset via Overbridge the “Midi To” checkbox in the Ableton channel is “greyed” out - meaning I have click the checkbox and select the Digitone and and the channel number again. Not a super big deal but quiet annoying…
You start the digitone before or after the computar?
After. I leave my MBP always on 
Try before. Allways run my elektron before the mac