Meta (formerly Facebook) has restricted access to the WhatsApp Business API until May 2021, and only well-known brands can use it. As a result, many small and medium-sized businesses obtain unofficial APIs in order to use the API’s extended functions. They accomplish this by obtaining data from third-party suppliers.
Merchants, however, frequently create accounts using the official API. Before they can officially open an account, they must provide various supporting documents and go through complicated procedures. Therefore, many small businesses may opt for a third-party provider that can directly obtain the WhatsApp API. The reason primarily is for convenience, so that they do not have to go through multiple steps.