Bluehost has no one who knows anything but Wordpress. I have the DNS, it's pointing to the folder my site is in, and they cannot tell me why I (and they) get the error "This page isn’t working right now". Ok, why isn't it working? Can I run it locally on the server? No one knows. Actually this is great progress but I'm at a dead end.
So, I'll cancel that and try another host, maybe one that knows something about phpBB.
Or, do I wipe the thing clean and install their phpBB software and see where that goes?