Notes on WhatsApp for business: Meta's rules, the Business app and the API.
WhatsApp Business Greeting and Away Messages: Who Gets Them, When, and Why They Don't Send
WhatsApp Business Greeting and Away Messages: Who Gets Them, When, and Why They Don't Send
Set both automatic replies in the WhatsApp Business app, choose who gets them and when, and check six causes in order when they do not send.