I’m trying to make a bot reply to a whatsapp message, however, even though the Hello World message does get sent, anything beyond that doesn’t work. Here’s the error that appears when I try to reply to a whatsapp message.

[whatsapp] Failed to send text message from bot to Whatsapp. Reason: {
  message: '(#131030) Recipient phone number not in allowed list',
  type: 'OAuthException',
  code: 131030,
  error_data: {
    messaging_product: 'whatsapp',
    details: 'Recipient phone number not in allowed list: Add recipient phone number to recipient list and try again.'
  },
  fbtrace_id: 'A2doWl0SA7tAJ7MfcHnuxO0'
}

I know it states that the recipient number is not allowed, but how do I add it to the list? Couldnt find anything to help