Anyone having issues with the app? I went out to fly where I normally do to "practice" and it took longer than normal to get enough GPS, flew for a whole 7:40 before my battery was down to 30% so I flew it home. Landed. Wanted to practice right there landing in manual but the app shut down on its own and when I tried to relaunch, it wouldn't. I shut the phone off. Back on. Same thing. Still the same thing.