Your subscription to Defenx Security Suite has been expired and you don't know what to do. 

Click on this link in order to buy a new license:

https://www.defenx.com/defenx-security-suite/
​ 

Then, click on "Activate" button and this window will open:

Please insert the new key, confirm your password and click "Next":

This window will appear:

You successfully activated the software.

Your computer is now safe again :)