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Facebook emebed doesn't workAsked by vipulaggarwal on September 07, 2015 at 07:10 AM
Facebook embed form gives 404 error..
You encounter this problem, because of using HTTPS.
Also, HTTPS protocol can cause over limit easily for free account owners. Since your account is free, you have only 10 SSL(Secure Submission) right.
To beat this issue, all you need to do is re-embed your form again with using HTTP protocol. While you are embedding your form just leave "Secure form" check box unchecked.
Please try this method and give us feedback about the last situation.
Have a nice day.