How to add your company email address to login to your Facebook
To connect to WhatApp API Meta requires the client to logins with their actual personal Facebook Page.
No everyone wants to expose their personal credential from FaceBook inside the Meta Business environment. To be able to link a company email to Meta bellow are the steps:
1- Go to your Facebook personal page from your computer or mobile.
2- Click your profile picture dropdown, select "Settings & Privacy"

3- Click "Settings"

4- Find and select "Profile details" from the left menu.

5- Add your new email address as follow:
View on browser: click on contact & basic info and click edit 🖋️

View on mobile: scroll down until you see "contact info" & click edit 🖋️

The option for adding the address looks as follow:
