Page problem

Hi, I am using your plug-in and I found that it is easy to use. Plus it support Woocommercer multilanguage which I really need it.

However, I have no idea why everytime when I try to manage the page (including edit and add new page) All my original pages will be disappeared. I can only found the new pages I just added ( which is the pages that added after activitate the plug-in)
When I try to delet it. I can find the original back.

Is this some setting problem or something else?

thanks

https://wordpress.org/plugins/ceceppa-multilingua/