Post Types Order
The Post Types Order plugin is a great tool for customizing the display order of posts.
The only downside is that it prevents FacetWP’s sort box from sorting correctly. If you run into issues while the Post Types Order plugin is activated, browse to Settings > Post Types Order and uncheck the “Admin Sort” box.
If that doesn’t work, you could also try unchecking the “Auto Sort” option. With that option disabled, you’ll need to manually add
'orderby' => 'menu_order' to your WP_Query objects.