It's redirecting you to Impulse because it's the replacement for Stardock Central.  A Stardock rep will have to give you a link.  I'm not sure any links are left on the site for it.

Were you trying to download something or get updates?  Have you tried Impulse?

ObjectDock Plus is having a few problems.  The last I saw was that they are working on it.  Right now the flyout for the weather docklet is showing wrong days, minor hicup. 

it's all over the forum pages (long as you search)

Sign in on Wincustomize. Go to the main page where you see your avatar on the right. Click the settings link above your name and avatar. Choose the registrations tab. All your stuff you have bought, like your membership, will be there. Mine has 3 links to stardock central.  Hope this helps.