Post Taxonomies & terms, options do not show

After the last update the options for Post Taxonomies & terms do no longer show when creating a new post grid. I use this to filter on categories, which is now no longer possible. All my existing post grids are no longer showing (build by using a category as a filter term in Post Taxonomies & terms), only a white empty square shows on the page that used to show the post grids. I deactivated and reactivated the plugin and deleted and reinstalled the plugin, but without result. Can you advise on a solution?