You can’t use WhatsApp business with a number that is used for WhatsApp Business API. They are two different things . 360dialog provides the WhatsApp business API only which serves as an application programming interface (API)and it is not an application itself. If you want a frontend user interface (UI) to read and respond to messages and unlock other features you need to subscribe to a software integration partner or ask the 360dialog team to recommend one in this form: https://www.360dialog.com/contact