Your SkyBell is designed to be self-diagnostic. Once the SkyBell is installed, the doorbell button should turn green to indicate a successful connection with your WiFi Router. If the doorbell button turns red, it means that SkyBell was unable to connect with your Wi-Fi network. Relaunch the App and go to device settings to reconnect to your Wi-Fi network. Once you successfully sync once, you do not need to re-sync or delete your SkyBell for any reason.