Passing MIDI notes on Octatrack MK1

How do I get my MIDI notes to play through? I have a controller transmitting on CH 1 plugged into MIDI in and the octatrack and a synth plugged into Midi out but can’t get the MIDI notes to pass through.

I read that the MIDI trigger channels might be interfering but … How do I change the MIDI trigger channels on the MK1? I can’t move the cursor into the ‘TRIG CH’ area.

This guy barely got it to work after a bunch of swearing. Unfortunately he zoomed in too much so I can’t see what buttons he is pressing: https://youtu.be/UXa_exUMUVE?si=s8EOT1ZhUoSNxOlt

Uh, right arrow doesn’t move the cursor?

Yep!