I am not seeing the "Quick Reply" box you mentioned. I was directed to sign in and then reached this "Reply to thread" box. I cannot speak to others experience, but I am not finding this intuitive. I still don't seem to be able to reply to specific posters - sorry Joyce.
As a college educated grade-A professional who has written three books, I don't normally consider myself particularly dense! I am trying to wade through this jungle with a mental machete, but if anyone has any other suggestions...
Mark