Can someone please urgently help? Thank you very much. I hope someone can identify the issue. My IT Developer professional is not helping at all.
I attached the image with the result after using FB debugging tool
Debug this on your end, http response 418 should be easy to locate. Could be an issue with your SSL cert.
Thanks for your reply. I confirm the SSL certificate was not configured properly. Now the app is live but still now working. It might be because the business verification process is still pending on FB end. I will be able to test it once the business has been verified.
*still not working