If I exit out of the app or even scroll down after I hit “start” for the timer, it will not notify me. For example: I started the timer after finishing and exercise then exited the app to respond to a text message. I locked my screen after finishing the text and waited for the timer to go off. After realizing I was waiting a while, I opened my phone back up to look at the time remaining and noticed that at the timer had already gone off. It gets really frustrating because I feel like I can’t use my phone at all during the rest time because the timer won’t go off. Even if I scroll down to look at the rest of my workout and then lock the screen, the timer won’t go off.