In addition to the site, the project's telegram chat and telegram channel are also closed. The FBI published messages there. Most likely someone was arrested.
I guess some of the members may have made a new telegram? It could very well be a honeypot. I would be cautious with anything regarding breach forums right now.
They don't learn from their mistake. You don't put your DNS on cloudflare when someone is selling high authorities intel which can directly lead to the main server and admin if bad OpSec.