How to delete a irrelevant facebook comment from my website(Asp.net) - facebook

Question

How to delete a irrelevant fb comment from my website. What i am doing is as:
<div id="fb-root">
</div>
making myself as admin :
<meta property="fb:admins" content="myfbid"/>
<script> (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_US/all.js#xfbml=1&appId=MyID";
fjs.parentNode.insertBefore(js, fjs);
} (document, 'script', 'facebook-jssdk'));</script>
Placed where i want FB-Comment box to be rendered:
<div class="fb-comments" data-href="mysiteurl.com" data-width="600"></div>
My basic question is how can i delete a comment which is vulgar and publicly visible ? Although i have set myself as moderator in tools then also i am not able to delete other people comment(facebook) from my website i can only mark them as spam but others can easily see the comment on thier individual login. Thank You

Answer 1

I used the following method:
Put this in you Document in the head section:
<meta property="fb:admins" content="jayeshjain24ec" /> //username of moderater
<meta property="og:url" content="http://www.something.com/" />
step 1) Go to this url : https://developers.facebook.com/tools/debug
step 2) Enter your URL and click on debug.
In case if there is anything to be corrected,it will be mentioned here.
step 3)Correct all the warnings.Check the Scraped URL link at the bottom.Make sure it gets all the required Meta tags.
You will get a moderation option on your website once everything is ok.
ALTERNATE SOLUTION:
Give yourself admin rights for the app(there is an option in settings).
go to this url: https://developers.facebook.com/tools/comments?view=queue