We've noticed that Martin have replied you and contacted to our custom dev team to review your request.

Have you found a better solution/plugin?
I need people to make a public comment and then all replies to this comment need to be private/hidden. Simple task, actually. Haven't found a way, yet.

The wpDiscuz Private Comments designed to work in this way. The  button is using to make the whole comments thread private. I.e. only the parent comment can be set as private.  There is no simple way to make private only the reply.

However, the gVectors Team custom development service is ready to help you customize the wpDiscuz plugin and the paid add-ons. Please contact us via salesgvectors.com email address and provide a list of custom features you'd like to add. We'll check and let you know which requirements can be done and how much do they cost.

Can I make a private comment(reply) to public comment(question)?

I would like that people make public comments and I reply as a private comment.

Thank you.