This add-on adds support for Polylang and WPML plugins. WP Grid Builder natively works with Polylang and WPML plugins. However, it requires to create grids, cards and facets for each language (like for posts).

With this add-on, grids and facets will be queried in the right language in your pages. It means that you only need to create one grid, facet or card to handle all languages defined on your site. And, you will be able to globally translate all strings of WP Grid Builder directly from Polylang and WPML interfaces.