You can downgrade to a lower level license by paying the support price for the license.

To downgrade to lower level license

1. Login to your Client Area 
2. Go to My Licenses tab
3. Select the license you want to downgrade
4. In the Actions section under Downgrade license to select license you want to downgrade to and click Downgrade button
5. This takes you to the KBPublisher purchase page where you can buy a downgrade