How to reset your WhatsApp Phone Number PIN
Navigate to WhatsApp Manager > Account tools > Phone numbers.
Select your business phone number.
Click the Two-step verification tab.
Click the Turn off two-step verification button. An email with a link will be sent to the email address associated with your business portfolio. Use the link to disable two-step verification.
Once disabled, you can re-enable it by setting a new PIN.
Note: If the above steps aren't working, please get in touch with us as we may be able to change the PIN from the API.