If Alibre Design reports 'Activation was not successful' - this may be caused by remnant activation information being present on the computer.
This can often be resolved by deleting the following folder (where <Windows userid> represents the name of your user account on the computer).
C:\Users\<Windows userid>\AppData\Local\Alibre Design
NOTE: the AppData folder is hidden by default in Windows, you may have to turn on Hidden Items on the View tab of File Explorer.
After deleting the folder contents, re-boot the computer then launch Alibre Design - you should be prompted for registration information (note you will need your activation code).