Since version 1.7.3, WP Ultimo can be activated directly via the wp-config.php file. To do that, you’ll need to place your license code inside the wp-config.php file, by pasting the following snippet above the
/* That’s all, stop editing! Happy blogging. */
define('WP_ULTIMO_LICENSE_KEY', 'Your License Code Here');
Remember to replace the “Your License Code Here” part with your actual license code which you received alongside the plugin file when your purchased your license.