@QBWarmDays Thanks for your help. It seems however the midi port is already formatted this way, from what I can see in the screenshot.
@aniruddh_immaneni Many thing are changing in v1 (see the discussion), it is still in alpha but close to release now and the documentation is pretty much up to date. Feel free to downgrade to v0 though, the old documentation is still available here.
Back on topic, the issue is still puzzling me, something must be failing silently where it should at least print an error, I’ll be adding some debug messages in next alpha release to help pinpoint the culprit.