I am receiving the same issue with my site use of this program. Though I am using allot of WordPress features/plugins. Below are the DEBUG responses that I get when trying to use the front-end view of this plugin.
Notice: wp_enqueue_script was called incorrectly. Scripts and styles should not be registered or enqueued until the wp_enqueue_scripts, admin_enqueue_scripts, or init hooks. Please see Debugging in WordPress for more information. (This message was added in version 3.3.) in /home/content/72/7710272/html/zwd_beta/wp-content/gatsitenetwork/flrentalsearch/wp-includes/functions.php on line 2671
Notice: wp_enqueue_style was called incorrectly. Scripts and styles should not be registered or enqueued until the wp_enqueue_scripts, admin_enqueue_scripts, or init hooks. Please see Debugging in WordPress for more information. (This message was added in version 3.3.) in /home/content/72/7710272/html/zwd_beta/wp-content/gatsitenetwork/flrentalsearch/wp-includes/functions.php on line 2671