I am using bellow code for comments:
<div class="fb-comments" data-numposts="3"
data-href="HERE_UNIQUE_URL" data-width="100%"
data-order-by='reverse_time'>
</div>
<script type="text/javascript">
(function(d, s, id) {
var js, fjs = d.getElementsByTagName(s)[0];
if (d.getElementById(id)) return;
js = d.createElement(s); js.id = id;
js.src = "//connect.facebook.net/en_GB/sdk.js#xfbml=1&version=v2.8&appId=APPID";
fjs.parentNode.insertBefore(js, fjs);
}(document, 'script', 'facebook-jssdk'));
</script>
Suddenly, It is not showing comments box on new url(data-href). while it is showing with some old URL with comments message. Code are same. There have no error in console.
Use "https://developers.facebook.com/tools/debug/" and debug your new URL. Maybe this is an issue from Facebook comment plugin for the new URL.
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