sorry, i missed that you motioned to look in the subfolder.
when applying CMS to files in a subfolder, the path to the connection and WA_CMS/WA_CMS.php files need to be modified to move down to the root:
<?php require_once('../Connections/PowerCMSConnection.php'); ?>
<?php require_once("../WA_CMS/WA_CMS.php"); ?>
also, it doesn't look like the connection file was uploaded, there is no connection folder at the root.
like i said, files cannot be found on the server if they are not uploaded.