https://wpml.org/errata/blog-manager-load-button-doesnt-load-posts-secondary-language/
Blog Manager - the "Load more" button doesn't load posts on the secondary language - WPML
Mar 26, 2021 - Clicking the Load more button when using the secondary language on the front-end, displays a message that there are no more posts found. Initial list with
load more buttonblog manager