not displayed

Hello!
It does not work for me
In the settings of the post content is in the publication it is not.
With what it can be connected? I tried the Table of Contents Plus plugin but the result is the same.

• This topic was modified 5 years, 6 months ago by Jan Dembowski.
• This topic was modified 5 years, 6 months ago by Jan Dembowski.

The page I need help with: [log in to see the link]