This is Bishal
I apologize for the inconvenience you are experiencing with the plugin. Please make sure you have updated both the free and pro versions. Or please, follow these steps:
– Uninstall the Table of Content Free and Pro plugin.
– Clear your cache. If you use any caching plugin.
– Reinstall the latest versions of both plugins.
– Choose the premade layout with the Floating table of contents at the bottom.
You can check out our demos here where everything works fine. >> http://demo.boomdevs.com/table-of-contents
We are very sorry that we overlooked your ticket due to some technical issues. We value your satisfaction and feedback. Please try the steps I suggested and let me know if it works. You can also contact me through the live chat on our website homepage.
I appreciate your patience and cooperation