Does viki app does not allow commenting/replying to forum threads?

Why replying to threads via viki app is not possible? Or there are some other ways which i possibly don’t know but need to know to answer forum threads?

I wasn’t aware you can access Discussions (Forum) via the app. Or do you mean the Comments section under the episodes? Yes, apparently the app is not set up so that you can answer someone and is also not giving you notifications in the app if someone responds to you from the computer (disqus). And I think tagging I heard somebody complain they can’t tag anyone in their comment.