Not all post from a custom taxonomy showing in the query

Hello, and thanks for the amazing plugin, there just seem to be a small issue in our website, when a search is made from a custom taxonomy, it only shows 3 posts, and there should be 5, the query it’s not showing all the posts.

Search result: https://utopix.cc/resultados-de-busqueda/?slg=post&mdf_cat=729&page_mdf=d1fae0c7e736ef18dee88ea1bf186c67

Post that should be shown: https://utopix.cc/serie/tribuna-feminista/

Thanks a lot

The page I need help with: [log in to see the link]