User can ban(hide content(posts,comments)) another user.WordPress problem

I have a project with applications for android and ios, but it takes data from a site that is on WordPress. And so, they don’t want to accept my application on IOS because there is no possibility "User can ban(hide content(posts,comments)) another user". I tried to google, I couldn’t find anything like that. No plugins, no scripts. Perhaps someone has done something similar?