Are you using the Digitone as direct Audio device or is it connected via an Audio Interface?
When you switch to ASIO in Ableton, you need to select the Audio interface (either dedicated one or the Digitone if you don’t have one), then you have to go into the channel config and enable to Inputs/Outputs.
Also on the tracks themselves, you have to activate them selecting the correct channels and set the parameter from AUTO to IN.