If the redirect is not working, it could be a php error occurring preventing the header function from redirecting.
Add the following at link one of your page to turn error reporting on:
<?php
error_reporting(E_ALL);
ini_set('display_errors','on');
?>
be careful not to leave any blank space or blank lines between this code and the existing code on the page or you will trigger other errors. report back any errors you see and a copy of the page in a zip archive so we can examine the issue,