Open Conversations>Select ‘New message‘ or search for a previous one.
If creating a new message, and the contact has not been messaged before (or has not been added via CRM) – create a new contact and start messaging.

*This feature eliminates the need to share personal phone numbers.
Beware of this Meta (Facebook, Instagram) limitation.

Facebook and Instagram only allow businesses to send messages to users within a 7-day window from the last customer message. After these 7 days, the conversation is considered expired, and the business can no longer reply unless the customer initiates a new message.
So be sure to check your Conversations regularly. When this message appears, you can ‘Close Conversation‘ so it no longer appears in your Inbox.
Or, you can search for this customer and create a new message if their contact info has been added to the DFM CRM.