I was having issues with the MyLincolnMobile app on my modem-embedded 2015 MKZ. None of the remote features were working, like remote lock/unlock, or remote start.
I found out that this week, Lincoln published a replacement for the MyLincolnMobile App, called The Lincoln Way app:
Once I deleted the old app and installed this one, all my remote features returned. The app is good and quite fast. I'll post more impressions in a later post, but for now, everyone should upgrade!