Typical reaction you got from them
I had more or less the same problem as our 3.8 forum was always located in forum.mysite.com and the CMS of 4.0 surprisingly showed up there as well. With the good old vbadvanced you could make a homepage at
www.mysite.com. Unfortunately 4.0 doesnt support that.
Our CMS is now back to
www.mysite.com as we have put the whole forum folder one layer up. It might have a temporary effect on your SEO but we hopefully have tackled that with this handy article on the interweb. Maybe it will work for you as well?
http://www.tamingthebeast.net/articl...1-redirect.htm