Here's a video of the latest problem. https://www.youtube.com/watch?v=hQxIhuTR1BU
You'll see that the right-two tracks, a drum track and internal synth track, engage for recording properly. The yellow track, my Moog Matriarch, can't be recorded. Only played and heard.
As for the headphone jack, the volume knob is turned up. When I just use Force internal (as opposed to external interface), the headphone jack works just fine. Perhaps when using an interface you can only use the interface's headphone jack/outputs? That's fine, if that's the case. The bigger issue is not being able to engage an external synth clip to record. When it does seemingly randomly engage to record, it's not in overdub mode. Thanks in advance for any tips/tricks/things I'm clearly missing.