When you get the license code which is for iOS System Recovery, please go to the second feature of this software. As it is still a trial version, it shows "Unregistered" for you and you can check what you can do with the registered version.
To register this is similar to registering iPhone Data Recovery:
1. Confirm the registration code is for the corresponding function.
2. Type your e-mail account and license code in the box. For convenience, you can copy and paste from the e-mail.
3. Once you get "Congratulations!", you can begin to fix your iPhone/iPad after hitting "Close".