Pro Sites Posts Quota Not working

I have 4 Pro Sites levels paid. I setup for the first one the Posts Quota to 3. I logged in as a member with first level paid and I posted 3 posts. I posted the fourth and when I logged out, I was be able to see the 3 posts and the fourth one that wasn't suppose to appear any more because the limit was 3 posts only. Right? What do I miss?