Problem with Lazy Loading Post Grid

hello,

we are using this plugin in combination with wp-bakery post-grid where the posts are loaded automatically on scroll.

When I turn on the cache and these pages are cached it seems to work at first (I checked if the cached files exists) but after a day or so the page that should display the post-grid is empty. The elements are still loaded (images and html) and I can see them in the source code. There is no error in the js-console.

Any pointers?