While your subscription is still active, you can extend it by adding extra subscription time to the existing one.
To check the status of your subscription and extend it, go to Support -> License Center.
Click Extend License and you will be linked to a site where you can chose an option for extending your license with up to 5 years.
Extending your subscription this way has several benefits. You can not only reduce the cost by up to 50% and get the latest version for free but you can also qualify to receive a free product of your choice.
Once your new activation key (subscription key) was emailed you, connect to the Internet and click Activate Key. The east-tec Eraser Activation Wizard window will open. Please enter your subscription key in the text box provided and click Activate. You will be asked to restart east-tec Eraser to complete the process.