What happened to this once useful app?? – myGMC Review

I have been utilizing this app for the past 3+ years and found it helpful with monitoring aspects of my GMC vehicles. All of a sudden the app does not work and a message pops up saying it has been handed over to a new 3rd party company. I tried deleting and reinstalling but that doesn’t help. It’s disappointing when a good thing goes bad! What happened to this useful app??
Review by 2011RIco on myGMC.