murallitz Hello
I updated this file on your site: /plugins/system/jabuilder/jabuilder.php
Line 56:
//define('JUB_BUILDER_URL', ($https ? 'https' : 'http') . '://tools.themepro.com/builder');
define('JUB_BUILDER_URL', ($https ? 'https' : 'http') . '://themepro.com/builder');
Pls clear your browser's cache and check again.