If you need to manage or reset your license, you can do it as follows:

  1. Log in to your account at https://secure.blueberryonlinestore.com/Login.aspx 
  2. Go to the 'Your Licences - Purchases and Trials' page
  3. Click the 'Manage Licence Usage' option
  4. Click Remove for any PCs that you want to release your license from