The rumor is that the site's owner was arrested in Spain.

Quote from another forum (translated in English):

I was part of the staff at NB, and late the day before yesterday we were told that the "owner" had been taken by Spanish police, no one had heard from him for a few days before that. And one of the others had gotten a phone call with the message to close the site.

So for security reasons the site was deleted, so did our discord page.

That's all I know right now