Hi Steve,
Thank you for checking. The WP Debug is not active, I guess the error is displayed because it is a PHP error, which not affected by WP Debug.
I did some checking as you mentioned, and it it seems one of the plugin is conflicting with Airstory.
The Airstory plugin also mentioned about cross origin issue, but that is fixable.
Now the plugin works.
Thank you for assisting. Great team, great product.
