As David explained, we cannot help with canceling a subscription, but we may be able to help with the "does not work" part...
What subscription do you have? Adobe has subscriptions that install software on your local computer, but also subscriptions to online services. If you are subscribing to an online service, you may not get anything to install on your computer, and you will have to upload files to a web site in order to trigger e.g. a conversion.
Also, it looks like your question got truncated, and it's hard to help if we don't have all the information. If you want to provide more information, just click on the "Add your answer" button.
Karl Heinz Kremer
PDF Acrobatics Without a Net
PDF Software Development, Training and More...
http://www.khkonsulting.com