1. Make sure that the Watch is connected to the app and to Bluetooth.
2. Check the notification reminder settings in the app to see if the message reminder switch is turned on, and if the notifications for third-party apps such as WhatsApp or Facebook are enabled.
3. In order for your Watch to receive notifications of new messages from apps on your phone, the app must display a pop-up notification on your phone when it receives a new message.
4. If the above instructions do not solve the issue, press the button on the Watch to enter Settings--System Menu, then click Restart. Or, press and hold the button, then click Restart and check again. 5. To experience the latest firmware features, you can upgrade the firmware to the latest version in the app. To do this, open the app, go to the Device page, and click Device Upgrade.
6. If the above steps do not resolve the issue, press the button on Watch to enter Settings--System Menu. Click Reset. Then, check again to see if the issue is resolved.