Hi,
Did you setup WPML Media Translation? If so go to Appearance - > Widgets -> Intro position, then find your GK Image Show widget and slides input e.g. [#7484ff]slide2_1,[#81ac8b]slide2_2,[#68b5ff]slide2_3,
then go to Media Manager end edit slide2_1, slide2_2 and slide2_3 captions and descriptions.
You can also use [code=https://www.gavick.com/forums/storebox-wp/gk-news-block-multilanguage-26978.html]this method[/code]