Only showing one post

Hi,

The plugin is only showing the latest post while my shortcode states that the plugin must show 20 posts.

This is my shortcode: [slposts title_only=false number_posts=100 auto_excerpt=true excerpt_trail=image paginate=true posts_per_page=10 thumbnail=true display_type=olist thumbnail_wh=600×300 thumbnail_class=thumbimg full_meta=true]

and this is the url http://demo.projectfte.nl/nieuws/

https://wordpress.org/plugins/single-latest-posts-lite/