Apple watch incoming calls notifications...

Hi belan272,

You came from a great article which shows how to contact a app developer if an issue is isolated to a third-party app, which may be needed in this case.

To troubleshoot the notifications not appearing, ensure the notifications are set correctly and then reach out to the app developer for further information and assistance:

Check out the steps in the following article to ensure notifications are set correctly:

Notifications on your Apple Watch - Apple Support

"Customize your Apple Watch notification settings

1. Open the Apple Watch app on your iPhone, then tap the My Watch tab. 
2. Tap Notifications. 
3. Tap an app to see its options. To use the same notification settings on apps that appear on both your Apple Watch and iPhone, tap Mirror my iPhone. Some apps allow you to customize your notifications. Tap Custom, then choose an option:

• Allow Notifications: Notifications appear in Notification Center and your Apple Watch alerts you. 
• Send to Notification Center: Notifications are sent directly to Notification Center without your Apple Watch alerting you.
• Notifications Off: The app sends no notifications.

1. If you customize an app's notifications, you can also group notifications from that app. Tap Notification grouping, then choose an option: Off, Automatically, or By App.

Some apps offer further customization, while others only let you turn off Apple Watch notifications completely. Scroll down to the Mirror iPhone Alerts From section and turn off the setting next to the app."

Follow the article at the top of the page to reach out to the app developers if the issue persists for further help.

Kind regards.