Well, looking through your most recent posts, and the timeline in which they were posted, I'd venture a guess that your actions were seen as Post Padding, as a way to quickly meet the required post count, for the sole purpose of gaining selling privileges. I know if I'd been a staff member, reviewing your activities today, that's sure the impression I'd have...
Let's review, shall we...?
#1. 17 posts, in less than an hour...
#2. all consisting of such substance as "Nice Tank." "Very Nice Tank." "Nice Acropora." etc.
#3. Within 3 minutes of thinking you'd met the requirements, you started this particular thread, wondering why you couldn't start selling yet...meaning, in that 3 minutes, you'd already tried to sell...
The Classified Forums are a fringe benefit, for Contributing Members. We expect members to contribute, in order to gain access to these fringe benefits. So far, your pattern of "contribution" leaves a bit to be desired, especially given the obvious motive.