Problem with Featured Slider and WPML

Hello, I have a website with 3 languages (using WPML): www.szczecin-apartments.rent Everything works fine except the Slider. When I'm in English, I change Featured Page #1 to #4 to match the pages I want. All the texts on the sliders are in English, even for Polish and French versions. Back to admin mode, if I change to French version, all the Featured Pages are empty. So I choose the correct one in French. And then, on the website, all the texts in the Sliders are now in French, even for Polish or English version. I can reproduce this everytime. Using last version proposed by update: WordPress 4.8 / Catch Responsive 2.5.1 / WPML 3.7.1 Do you have any idea? Thanks in advance, Stassy