How is support supposed to help you with this little info? If you don’t have a Halion Sonic 2 license then this upgrade path is obviously not going to work.
How did you get access to Halion Sonic 2? Do you own Absolute 2 or Halion 5? Are you sure you’re not using an unactivated trial version that’s using the emergency “All Applications” license in your eLicenser to run?