If your app isn't working, first make sure it (and your phone) are updated to the newest versions. We release new updates fairly often to make sure things are running smoothly. You'll also need to make sure your location services and bluetooth are turned on, and that the app has permission to use them. If you're talking on the phone or using another bluetooth device (like speakers or headphones), the app will not be able to unlock the bikes. Turn these things off while unlocking so your phone can communicate with our system, but feel free to use them during your ride after the initial unlocking step.