NodeBB is open source, so it is free for everyone to run and host by him/herself. There are commercial plans available for professional hosting though.
What happened to the prettified numbers on your NodeBB?
I like full numbers, and here in the Netherlands we're not using 1k or 1m but full numbers. I made a topic and @frissdiegurke helped me with it to make it like this.
@julian I think English is the parent repo, then translations are considered children of that one, as docs.nodebb automatically routes to /en/. That's what the documentation of your doc software says anyway. 😆