That is because there are certain categories such as Announcements under which only /e/ team members are allowed to post. User comments or post there will need to be approved before they can show up.
At first sight “certain categories” are not recognizable for me, where only /e/ team members are allowed to post. Or is there an explanation somewhere here in the forum that I haven’t discovered yet?
Well, there are other ways to post comments or posts to the topic.