Thanks, I will contact the main corporate office. Actually, this dealer was where the car was purchased, but we ended up using a different dealer nearby because we had issues. Unfortunately, that dealer closed so we are back to the original dealer. Most repairs are not done by the dealer.
Thanks for the tip on the app, I actually have a Fixd that I wasn't using any more since they updated their app to require a $60/year subscription. The item turns out to have a ELM327 v1.5 interface that the cvtz50 app wants, but I haven't had a chance to test it.