Well, I’m still having lots of issues.
Now I can hear my instruments, at least, when I play the midi keyboard. However, they do not record midi data onto the track nor, if I DO have midi data on the track (like if I draw it in with the pencil) does it play back (no sound). This video shows although when it does sound (like when I play the keyboard without recording, or when I draw notes on the midi roll) it’s very low – sorry I didn’t have the sound turned up. However, you can clearly see when the midi data isn’t showing up on that track.