You will need to grant Bluetooth permissions on your phone to ensure that the Weber Connect app is allowed to connect with your devices. Here are the instructions on how to do that for the different operating systems.
On iPhone or iPad
Follow Apple's instructions on how to enable Bluetooth and turn it on for the Weber Connect app on your iOS device here.
On Android Devices
1. Follow Google's instructions on how to enable Bluetooth on your Android device here.
2. Follow Google's instructions on how to grant Location permissions on your Android device here.