I have the Dinan stage 4 on my M2 and decided to mess around with the app for once. I popped the hood, got a picture of the sticker on the unit that has the MAC address on it, hopped in the car, loaded the app, and gave it a go. It shows up in the app. I type in the last 4 digits of the MAC address. It spins for a second and then you see a green box in the bottom right for a very tiny split second that says "try again" then immediately disappears. If I try again after this the app crashes. I have to force close and try again. I'm on the newest version of iOS on my iPhone 7. HALP