no superadmin

The super admin account seems to have changed to a normal account after I made the website live. The website was uploaded to a folder, mywebsite, so the URL is http://www.mywebsite.com/mywebsite and made live by doing a php redirect like so:
<?php

header( ‘Location: http://www.mywebsite.com/mywebsite/&#8217; ) ;

?>

All the other accounts are working except the super admin.

Thanks