In order to configure CubeCart to work properly with the URL of the server where your account is hosted, you should modify the /includes/global.inc.php file.

You should change these lines:

$glob['rootRel' ] = '/' ;
$glob['storeURL' ] = 'http://olddomain.com' ;


to:

$glob['rootRel' ] = '/~cPanelUsername/' ;
$glob['storeURL' ] = 'http://servername.com' ;


cPanelUsername needs to be replaced with your actual cPanel username.

servername.com needs to be changed to the name of the server which hosts your account (for example siteground217.com).