Tell me on the site in the News section. I use the Bitrix component: catalog.comments copied to a separate directory. Place the code block calling the component into the NEWS.detail template. The result was a mistake:
In the component settings, no comments are selected

Answer 1

Go to the settings of the

component

There are three types of comments. Own on the site, comments VC and FB. You need to choose at least one type. If you do not see the checkbox in the component settings next to the comment on the site, see the installed modules and are there blogs there.