I have an older Tablet running Android 4.2.2 that I've been using for the Uber Partner app successfully for nearly 6 months. But for the past month or so I've been having problems with the device crashing/freezing after 2 or 3 rides. This week I had 2 trips back to back where the system awarded time driven but did not record the mileage. Can't figure out if this is a problem with the app or with the tablet. Anyone have similar issues?