Method for filtering objectionable content for networking app

Apple Store Connect are not accepting my app for the following reasons:

"Regarding 1.2, we continue to find in our review that your app includes user-generated content but does not have all the required precautions.

To resolve this issue, it would be appropriate to revise your app to implement the following precautions:

  1. A method for filtering objectionable content
  2. A mechanism for users to flag objectionable content
  3. The developer must act on objectionable content reports within 24 hours by removing the content and ejecting the user who provided the offending content."

I am unsure how add in a method for filtering objectionable content. Users can create a profile and then message each other, but they do not post any other content than that.

Any help would be greatly appreciated.

Method for filtering objectionable content for networking app
 
 
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