DNS Problem

Yesterday I created a phpBB forum from the “one click installer” feature. I chose the ‘Easy’ interface option and I chose the name “forum.<yourdoman.com>” and it was successfully created.
For a reason I had to delete the forum, so I went to the interface and chose to delete the forum. Now I want to create it again under the same subdomain of course, but I can’t do that anymore. It is telling me:

Invalid Domain: forum.<yourdoman.com> is already being used in our system!

But actually it was deleted!

Somebody help me please…

Quite often it takes from several hours to a day before old domain info gets cleared from the system. Just keep on trying periodically, and if it’s not gone in 24 hours, contact Support.