Posting a new advertisement thread in Server Gala is supposed to be restricted. Therefore, new threads are automatically stuck in a validation process, where we review them manually. There are too many users that do not follow the Board rules, so we had to do it this way to mitigate potential clutter in the board.
We generally catch up with all reviews within 24 hours, but sometimes there are just too many posts to go through, or/and other tasks that we need to prioritize. In your case, your post hasn't been stuck for more than 24 hours.
I apologize for any inconvenience, but please try not to post the thread multiple times next time as it will just delay things further for everyone.