Problem in Gutenberg Editor

Hello,

I need help, this plugin does not work at some section of this theme
http://preview.themeforest.net/item/grenada-creative-ajax-portfolio-showcase-slider-theme/full_screen_preview/22712618
For example there is portfolio section, which is Gutenberg editor and does not appear WP MULTILANG function. Maybe you can help me?

Thank You

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