Submission for review and make the app public
Your integration will be successful only if your app review is successful. Facebook will notify you once the review is complete.
You can expect an incoming Facebook Messenger conversation within 48 hours in Dixa, it’s important that you answer this conversation, because it’s part of the verification process by Facebook.
Go to App Review for Messenger in Messenger Settings.
Click Add to Submission for the “pages_messaging”. It will now appear under Current Submission.
Click Add Details. A pop-up window appears.
In Select a Page option, select your page.
Select Your messenger experience doesn’t include automated replies option. In the text area where you are supposed to describe the Messenger experience, write "This is a live messaging application only, that might include some quick replies asking for the email". Click Save.
Click Submit for Review.
Scroll back to the top and switch the toggle beside Status to make your app public.
After “pages_messaging” has been approved, Facebook might ask you to verify your business, or to verify of the owner of the App. Any of those options are valid, but if you choose to verify the Business, then remember to associate the App to it by choosing the Business Manager in the Advanced Settings.
For more information about the App Review and the Business Verification process, please refer to the official Facebook documentation.