To ensure the prompt delivery of WhatsApp notifications, please check that you have a good Internet connection and your phone Sound & notification settings is configured properly.
Possible reasons for not receiving notifications:
- Muted groups and chats do not display notifications.
- You have disabled all notifications in the WhatsApp settings.
- You have unchecked Show notifications in Android Settings > Apps > WhatsApp.
- Your phone is connected to WhatsApp Web.
If you are receiving notifications but the messages are delayed, please read this article here.
WhatsApp Support Team