Hi Robert! To answer your first question, you can certainly reach me here in the forum (as you've done!), but you could also simply reply to the feedback@guitartricks.com email as well. I understand that I couldn't hear the BT because you had it going in headphones only. It would be helpful for me to hear the backing track with your playing, but it's not totally necessary.  Go with whatever is most comfortable for you! Hope this helps!