PenciDesign Supporter replied
Staff Reply
Hi,
You're currently using the table of content of the 3rd party plugin, so you should ask the author of this plugin here: https://wordpress.org/support/plugin/luckywp-table-of-contents/
Soledad already included the table of contents features, you can use it without installing any plugins by going to Appearance → Customize → Table of contents.
Regards,
PenciDesign.