Have you white listed your domain as descibed in
Setup key: You need a Facebook page ID. Create a facebook page, then go to go to your Page and click on the "About" section and scroll down to find your PageID.
Also in "Messenger platform" settings: "Whitelisted Domains" Third-party domains that are accessible in the Messenger webview for use with the Messenger Extensions SDK, and for Messenger plugins." Add your site domain there.
You can make me admin of your app so I can check for you.
- Need help? Post the URL of the related page (eventualy as confidential info), it will help solve your issue faster.
- An error, notice or warning? report the exact message including the line number
- If you get a white page , enable error reporting and / or check your server error logs.