A. 1. Ensure that your location services are enabled on your device. Go to Settings > Location and turn it on. 2. Check if the app has permission to access your location in Settings > Apps > Falling Prices > Permissions.
B. 1. If you are unable to check-in, try using the app in a different location or after restarting your device. 2. If the app allows, try checking in using a different device.