I have a steel which stopped showing the correct time a couple of days ago & the tracker was minus the zero mark. It would not respond when I tried to correct from the app so I uninstalled it & tried to reinstall with no luck so I had the battery replaced. The watch is working and the hands moving etc (and it vibrates when I press the tiny button on the back), but the app will not now install the steel. I’ve tried switching the airplane mode on & off and switching the phone on & off. I’m now stuck! Any suggestions gratefully received, thank you.