Facebook Like Box plugin doesn't show up for logged out users; only for logged in users

Question

I'm trying to add the Facebook Like Box social plugin in my website(I took the code from the official documentation).

It works fine but only if I'm logged into Facebook; if not it just shows

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I don't really understand the problem because in other websites I've built everything worked just fine.

I'm thinking that this might be a page setting. This is my <iframe> code for the Like Box:

<iframe src="http://www.facebook.com/plugins/likebox.php?id=1331391XXXXXXXX&width=298&connections=10&stream=false&header=true" scrolling="no" frameborder="0" allowTransparency="true" style="border:none; overflow:hidden; width:298px; height:290px">

Answer 1

If the Like box won't display content to logged-out users, it's almost certainly because there's a demographic restriction on your page. The API (and social plugins) will only return information about such pages to users who meet the restrictions.

It's most likely that you've not yet published the page, have marked the page as being for users >18, for users in a certain country, or have marked the page as being 'Alcohol related' (which limits it to users of legal drinking age in their country)