Just to set a context, your mobile app really does not work the way you think it should. The primary issue is once the date for an appointment passes, that service appointment no longer appears in the app. In my case we are waiting for a part, you send a message via the app to me, I get an iOS notification. But when I go in the app there is no service appointment, because the date has passed, so I cannot read your message. There is a little red dot next to Service indicating I have a message, but of course I cannot read it.
I also could not find any service records in the History section of my account on-line.
So contrary to the advice that you gave me last week, I set up yet another appointment so I could send a message to service. BTW finding the Lancaster service center was not easy, as typing Lancaster in the search box brought up everything from MD, PA and DE, but not your location. Let me reiterate, the mobile app does not work the way you think it does. So please do not limit communication to it.