FenSens Sensor/Backup Camera funktioniert nicht

Smart parking sensors mount on the front and/or back of your vehicle (Please sync accordingly to vehicle placement). •Weather-proof for long-lasting use in rain, snow, car washes, 140 Fahrenheit to -50 Fahrenheit. •Completely wireless for simple installation, just screw in the FenSens license plate frame & sensors with the included custom anti-theft security screws. •Anti-theft features keep your device safe and prevents any non-registered users from using the device (making it completely useless to thieves). • More in-app features and compatible connected devices coming soon.  The included mobile app for iOS allows you to receive instant audio, visual, and vibration alerts right on your phone for the parking sensor or a live backup camera view with the backup camera (each product sold separately).  Additional features coming soon. •Included smartphone mount allows you to maintain “hands-free” phone app usage. • Ultrasonic parking sensors provide audio, visual, and vibration alerts on your app.  The parking sensor or backup camera are an affordable solution that replaces your license plate frame and installs on your car in 5 minutes without any wiring or professional help needed.  A free included smartphone mount and TAP QuickLaunch button allow you to follow hands-free driving laws, launching the app and sensor readings in one second, without having to fumble around with your phone.  FenSens makes parking a cinch and upgrades your vehicle with new car tech without breaking the bank! • The app instantly launches hands-free and allows you to easily access other connected car apps.  FenSens is the world's first smart wireless parking sensor or backup camera.  Please refer to the user manual for the exact field of vision and other helpful tips for getting this easy parking sensor setup the way you like.  Check your blind spots, and park cautiously with this device, cameras, and any other backup safety product.  Use with the included patent pending TAP QuickLaunch button to quickly launch the FenSens app, Maps, Pandora, Spotify, Roadside assistance, and more.  Please review and adhere to local license plate laws and if needed, slightly adjust vehicle registration stickers so that they are easily visible.  Included in-app distance display is for visual display purposes only, the actual field of vision may vary.  Always check your blind spots and never rely solely on the sensor or camera.  Use your eyes and common sense.  Product comes with a one year hardware warranty.