OK, after update new version theme I lost some settings.
One of them is Facebook Like Box and Like Button.
Now I can't restore it.
I have to paste this code after <body>
<div id="fb-root"></div>
<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/pl_PL/sdk.js#xfbml=1&version=v2.5&appId=2588469732680";
fjs.parentNode.insertBefore(js, fjs);
}(document, 'script', 'facebook-jssdk'));</script>
I edited file page.php, but still not working.
Where should I paste this code?