Devlogs from new accounts getting held for manual review comes up a lot on this board, and it's usually an automatic spam check on accounts without much history rather than something wrong with your posts. Thirty days is on the long end, but judging by the other unanswered ticket threads here, support seems pretty backed up right now.
I'd leave both pending devlogs where they are instead of deleting and reposting them, since a fresh copy will most likely land back in the same queue. If you want the big update out before they clear, you could put the patch notes in your game page's description for now so players still see them. Hope they get approved soon, it's rough having your first update ready and stuck waiting.