Greeting text for Comments area

Title “submit a comment” is doubled over comments area. What should I do to avoid it?

Could you post your site URL here, so I can have a look?

If you want it to remain private, you can also contact us via this contact form:
https://jetpack.me/contact-support/

If you contact us through our form, please make sure to include a link to this thread in your message.

example https://intokino.com/beats-of-freedom-rez-leszek-gnoinski-wojciech-slota-2010/

“Submit a comment” is “Dodaj Komentarz”, you’ll see that at the bottom of the post.

I suspect that this is something in your theme. Take a look at your comments.php and see if you see the text there. If so, then delete it. It looks like it’s in an <h3>. Take a look and tell me if you find it.