Oh, this is in regards to Easy Table of Contents…
You should post support issues in the wp.org support forum:
In regards to you posting a link… it seems the link is being blocked by the anti spam filters due to being suspicious.
On to your issue, please try deactivating the Smooth Scroll feature found on the Settings : Table of Contents admin page. It is at the bottom of the General section.
If turning off that feature does not help, then I’m sorry to report the plugin is not compatible with something in your installation and that you will have to try an alternative plugin. Let me know what you learn.