Kindly be advised we cannot cancel subscriptions or issue refunds on the forum.
You may cancel your Bitdefender subscription from Bitdefender Central or by contacting Customer Support at: https://www.bitdefender.com/consumer/support/help/

Thank you for your understanding.

Help And Support

Under Help and Support or in the new for 2016 "Bitdefender Central" add a link to a webpage in HTML file format of the "user guide" for the user's product. This file should also be downloadable in pdf format.