If you have acquired a license, you can quickly activate. Go to Start > All Programs > IDERA > SQL Comparison Toolset > License Activation. In the License Activation window, type or paste the license number you received, and then click Activate License. The license activate utility connects to a web service running on IDERA web servers that then validates the license you provided. Within a few seconds, you should see a confirmation message indicating that the product was successfully upgraded.
The validation of the license via web may fail if your network policy prevents your machine from contacting external web services. In such case please follow the instructions outlined on the bottom half of the activation window (see the screen shot below).