Not abble to select the good language caption (with polylang)

Hi. My site is multilingual using the Polylang plugin.

I have 2 pages quite similar with galleries, each for one different language, and with 2 galleries, each pointing on French or English version of the same pictures.

When you translate a picture, Polylang just creates a new set of captions and titles for each picture, in the new language, without the need to reload a new pict. These pictures are then seen on the media list and the published pages like new ones with their own caption and title, depending of the language, set to the page.

So, my new translated page contain these translated pictures in a new gallery, but the problem is that SimplyGallery displays the real image caption and not the translated one. So I have no translated pictures on my new translated page.

Could you fix this problem please ? This is a blocking point for me and I would like to use Simply Gallery instead of an other plugin.

Thank you in advance.