Copy this in your developers console to expand all posts and comments on a Facebook page

fb-expand-all.js

// 1. Scroll to bottom of the FB page to load all posts
// 2. Copy jQuery into the dev console, so that $ becomes available
// 3. Execute this script, which will expand all posts, comments and comments replies
// 4. Rerun to make sure every post/comment is picked up (after console.log is not logging more events)

// reset array
window.a = [];

// fill with links
$('.UFIPagerLink, .UFIReplySocialSentenceLinkText').add('div.userContent .see_more_link').add('div.userContent .see_more_link').each(function() { window.a.push(this) });
$('.UFICommentActorAndBody a').filter(function(i, el) { return $(el).text() === 'See more' }).each(function() { window.a.push(this) });

// click one by one (synchronously to prevent RAM flooding/browser crashes)
setTimeout(function() {

	(function myLoop (i) {          
		setTimeout(function () {   
		  window.a[i].click();
		  console.log(i);
		  if (--i) myLoop(i);
		}, 500)
	})(window.a.length - 1);

}, 5000);

Hello!
Auto expand all comments and replies on Facebook For this plugin...
https://developers.facebook.com/docs/plugins/comments
No way to limit but please help, thank you!