I'm not a moderator, and did not see the post that was deleted, so I can't give you an definite answer. However, I can make an educated guess. Notably, your post creating this thread doesn't belong in this sub-forum. This sub-forum is about posting deals and freebies, not to create threads asking questions about the site. This includes asking why a previous post in this sub-forum was deleted. The proper place to ask these things would be over in the
Feedback sub-forum. Since you say you were asking a question about how the forum is run, it probably belonged there as well, and this is why the post was deleted.
Note this isn't a criticism, everyone has to learn the rules of a new forum and are bound to make a few mistakes.