I think you overlooked what Upgrade00 suggested to you. If you do not want your main thread to be locked, you should lock your secondary thread. Once the moderator notices you have multiple announcement threads, they will lock one of them. To avoid locking the main thread, you should lock the secondary one as soon as possible.

However, you can have multiple official accounts which you can use to guide your users. But you have to be under one announcement thread. I saw you launched a signature campaign. Good luck with your business.