Ajay on "[Plugin: Contextual Related Posts] No post showed"

With me no similar posts are often found. Although these posts are available. Cache I tued and emptied.

https://wordpress.org/plugins/contextual-related-posts/

http://www.kameramann.eu/eurobowl

Is it only a specific post? I see it loading on this: http://www.kameramann.eu/orf-dreharbeiten-tirol-im-winter/

What is the setting for "Automatically add related posts to"