Hello, the issue is that the user does not have the WhatsApp administrator permission in Odoo. To enable this, go to Settings > Users and select your user. In the 'Other' section, WhatsApp will appear, and you can assign the Administrator role. I hope this helps.

I can't see the field in developer mode either. The Access Token field does not exist for me either.

Hi,
The message is coming as value for a required field is not provided, the App Secret (app_secret) is expecting a value, if the field is not visible for you, turn on the developer mode and see if you can spot it

Thanks