Plugin not working

Hello,
I want to use the Plugin on my website. I want to use it especially on pages, not on posts.

For example: https://haushalt-aktuell.com/bester-staubsauger-test-vergleich/

I installed the plugin and connected sucessfully to disqus but nothing happens.

Do I have to “active” the plugin in any way? Or do I have to insert a shortcode?

Best regards,
Tobias