To modify the information of your profile in WhatsApp Business API:
1. Access your Meta Business Manager and then go to the WhatsApp Manager section.
https://business.facebook.com/wa/manage/home
2. Then select the phone number:
3. Click on the Settings icon.
4. Finally, select Profile.
You will be able to add:
- A profile picture
- A category
- A description of your activity
- Your address
- An email
- The link to your website
Remember to save the changes once updated.