But they are no longer activated and they ask for a cd key again , but ive already activated them 2 years ago.
If you've reinstalled windows since then or moved to another machine, that would be why. But activation is separate from whether the registration exists on your account.
For the issues with your Impulse account, you'll need to contact downloadsupport@gamestop.com. For your Stardock account, support@stardock.com should be able to help track it down.