If you aren't getting a message specifically telling you your post was deleted by a moderator then the thread in which you are posting in has been removed; Likely because it's a spamming ground for account farmers and campaign participates.

Also, another reason why your posts might not be updating is because, you have posted in Serious Discussion which doesn't contribute to post count.

Next time, use the search function here on the forum and you'll come to a conclusion without ever needing to open a new thread.