After the latest firmware update to SW Version 2.3, Connect IQ 3.2.1 and not sure if any other version is relevant, my watch stopped communicating with my phone. I removed the watch from Bluetooth on my Android Huawei P20 Pro phone, remove the watch from the Connect app, and tried to reconnect it. As I pair phone from the watch, the phone's Connect app sees it but then returns a Pairing failed error after about one minute of trying.
What happened and how can I pair my watch to my phone again?