After CM.com has requested a WhatsApp Business account for you, you need to give permission to CM.com to send messages in your name. You will receive a notification within Facebook Business Manager and by email.
To approve this request inside your FB Business Manager account, follow these steps:
- Go to “Business Settings”
- Click the option "Requests" and choose the section "Received".
- Approve the request

The next step you should take is to verify your Facebook Business account, if you have not done so previously.