Comments on Profile Post by herosaver

It's because you're not old enough. Wait for 24 hours.
Also use the comment button

I think you need five posts in the actual forum section first? Or was it ten? Something like that

Incidentally, on the bottom right of a profil post is a comment button, there you can answer on that particular post instead of making a new one

You need to have five comments on the threads/forums. Then you can create/post your own thread