Duplicated site can't get comments.

I’ve duplicated two sites from a multisite installation.
I noticed that the sites I’ve duplicated wont get comments.

The first site: https://core-fiction.com/ficcional/ won’t get comments.

And when I comment on the second site https://core-fiction.com/planeta-elend/ the comments are sent to the original site in English https://core-fiction.com/planet-elend/

I’m kind of new, so I can’t really point out into where the problem may be. Any suggestion?

https://www.ads-software.com/plugins/multisite-clone-duplicator/