Can’t see notification count
The notification count is functionality provided by your launcher and is not a function of WhatsApp. Launchers such as Nova or apps such as Notifyer can create notification counts on app icons.
A missing or incorrect notification count on the WhatsApp icon is usually caused by an issue with your launcher.
If you are not seeing the notification dot on your icon, you may need to remove the shortcut and drag a new shortcut out of your Apps drawer.
To remove a shortcut from your homescreen, tap and hold on the shortcut and then drag it to the remove icon.
If you continue to experience issues, please contact your phone's manufacturer.