That is exactly a problem – i did fount these pages at wp “pages”, and all of these are empty, some virtual content is somewhere else. I did translate (saved other language versions, but these are empty, if switched manualy with address. Only working default language (language which was set by default, when GD was installed) add listing page is working.
I did not translate actual add listing page, because i do not know how to do it. It would be good, if you could give some directions to me, how to do it. As i tested this on many various wp/wpml versions and these problems remain strong on all of these, i think there are more people with this kind of problems, so fixing of these would be helpful to them, also could increase usability and trust of your nice product.
http://kiemopauksciai.lt/test/ here is test site, which i will use. It haves enfold skin and enfold compability pack (your plugin). Also it need to have a web shop, but if it is a big problem (non-compability with woocommerce and woocommerce membership modules), i still do not know if this will work.