It has now gone.
When I checked three hours ago, all you could get was an empty forum home page with some styling customisations. All of the links on the page were broken.
I guess you checked a little earlier than I and I looked half way through the maintenance schedules, which will back up and delete the various database tables on Nabble's servers.
Volunteer Helper - but recommending that users move off the platform!
Once the admin for GregHelp now deleted.