Portfolio items don’t appear on page

If you are using Portfolio Element in Page Builder and portfolio items do not appear on your page, it’s highly possible that your portfolio posts are not correctly attached to some language available on your site. Follow please this article to assign all posts to language.
Each one post must be assigned to some language in case of multilingual website.

In case your detail pages of Portfolio Items open just “404 nothing found page”, probably Permalinks settings have to be resaved, solution is available in this article.