Multilanguage site and missing slider

Hi everyone,
we enjoy the Vertex Theme and so far have had a very good experience!

I have one problem concerning the slider. I am using the plugin Polylang to create a multilanguage site. For the default language everything works just as is should But on the translated homepage the slider does not appear.

I checked the page template. For the translated page it is set on homepage. I am using a static homepage.
I also tried to created tranlated posts for the posts which are shown in the slider and to add this new category to the php template. But it did not work.

I would be very obliged for any suggestions or ideas! Thank you so much in advance!
Best regards!

The page I need help with: [log in to see the link]