Why is my WhatsApp broadcast not delivered?

A Business-app broadcast only reaches people who saved your number, so a customer who has not saved it never receives it. Lists are also capped at 256 contacts.

• Ask customers to save your number. This is WhatsApp's own fix when someone is not receiving your broadcasts.
• Each list holds up to 256 contacts, and you can make as many lists as you like. Lists work only on the phone app.
• Some countries may see a monthly broadcast limit, which WhatsApp is rolling out gradually.
• If you connected the API through coexistence, broadcast lists are switched off and existing lists become read-only.
• To reach people who have not saved your number, a broadcast can be turned into a paid business broadcast, but only in limited countries.