News Feed Stopped working

Can someone take a look at my source to see if you can tell me what I need to do to get my newsfeed working again? I am a complete novice but do know how to go into cpanel and open the page up with the code editor. Just not sure what I need to fix. Site is located at missionenvironment.com

Thanks in advance for any suggestions.

It seems your host did not have PHP or try using <?php instead of <?

Are you using a CMS or blogging software? or is it hand coded? Do you have PHP installed on your server? The home page is named index.html, you need to name all the php pages with a .php extension(unless you’re using mod_rewrite to display it as index.html, but I doubt that).