If your website is on the Business or Online Store plans on Avoori, you can access “Remove ?replytocom Link to Avoid Duplicate Content” setting by going to your website admin > SEO > Advanced.
Whenever anyone makes a comment at any blog, a unique link is generated for that comment in the following format
These links are considered to be duplicate links. For search engines, it’s a normal link and each of these comment links for a blog post will have the same content.
So you must remove ?replytocom links from source code and you can do so by checking this option i.e “Remove ?replytocom link in source code”