Meta may limit the number of marketing template messages a person receives from any business in a given period of time, starting with a small number of conversations that are less likely to be read.
WhatsApp has found that per-user marketing template limits maximize message engagement and improve the user experience, measured through improvements in user read rates and sentiment. This limit helps WhatsApp users find business messaging more valuable and feel less like they receive too many business messages.
Meta blocked the delivery of this marketing template messages to the recipient.
The limit only applies to marketing template messages that would normally open a new marketing conversation. If a marketing conversation is already open between you and a WhatsApp user, you may send one additional marketing template message. Further marketing template messages can only be sent in an open marketing conversation if the person responds to any message.
Example:
The first marketing template message is delivered and opens a new 24-hour marketing conversation customer service window. The per-user marketing template message limit applies
A second marketing template message can be sent in an existing conversation.
Each time the WhatsApp user responds in an existing conversation window, you can send one additional marketing template message. You can also send unlimited free-form messages.