Submit_Comment does not work!

I’m trying to submit a comment on a site using your plugin and I receive this error:
“Sorry, there was an error. JavaScript and Cookies are required in order to post a comment.
Please be sure JavaScript and Cookies are enabled in your browser. Then, please hit the back button on your browser, and try posting your comment again. (You may need to reload the page).”

This is the submit url: http://stlucianewsonline.com/api/respond/submit_comment/?post_id=43210&name=teat&email=kim@tt.com&content=This%20is%20a%20a%20comment%20bla

Any ideas why this is failing? I checked and i have javascript and cookies enabled.

https://wordpress.org/plugins/json-api/