Good app gone bad

Im not sure what happened to this app. It was great and my favorite to track my exercise. I put down a Garmin watch to use this app and my iPhone. I loved that it tied into the iFit on my treadmill and kept track of all my activity. The app simply no longer works. Ive tried stopping and restarting and uninstalling and reinstalling. Nothing works. Ive now quit using the app and will not be renewing my iFit membership for my treadmill.

Cant find a unique username about iFit Outside