Wpml and booking hotel

Hello i try to make my booking site multilanguage.
Your theme says that is WPML compatible.
Here is my problem:
When i checkout from the default language the dates are still available in the other language (English).
When i checkout from the English (second language) the dates are still available it the default language.

How can i solve this problem? It is a mayor problem becuase i need one booking plan for all the translated products. (i have one room)
Thank you for your support.