Looking at you code it seems you have removed the entire body of the forum either by editing a macro or by CSS that removes display of all elements within the table in this code:
dropdown.build('dd_appdropdown');
dropdown.loadOnClick('/template/NamlServlet.jtp?macro=app_dropdown_later&node=1' + Nabble.getClientID() + '&_=' + Math.floor(Math.random()*999999));
</script>
</div>
<div style="clear:both"></div>
<table class="main medium-border-color">
</table>
<div style="clear:both"></div>
<div id="forum-footer" class="forum-footer nowrap">
Volunteer Helper - but recommending that users move off the platform!
Once the admin for GregHelp now deleted.