Try out these:
https://www.nulledfrm.com/threads/free-sms-whatsapp-notifications-using-own-mobile-and-sim-card-module.90383/
https://www.nulledfrm.com/threads/login-by-whatsapp-otp-and-whatsapp-notifications.90405/
This item is no more available publicly due to copyright issues. So i have developed exactly similar script and selling it without any encription and license.