Orders Show When Not Logged In?

Hi there,

Thanks for an awesome plugin, but one issue. When a customer is logged in, it only shows their orders in the dropdown, but when a guest views the site, it is showing all orders in the system? Can we just not show this field for guest users somehow?

http://screencast.com/t/kRN5ifel1u0w

https://wordpress.org/plugins/woo-order-field-for-ninja-forms/