There are 4 steps in this article.
Step 1. Click on the "Manage Account" located at the bottom of the list on the left-hand side of the page.
Step 2. Click on the "Cancel Subscription" tab and then Click on the "Continue to billing portal" button.
You will be redirected to the Customer Portal Login, as shown below.
At the bottom of the page in the last section Timeline there is a link Cancel at the bottom right.
Step 3. Click on the Cancel link and you be taken to the Cancel Subscription Page.
Step 4. Fill in the cancellation reason box and click Cancel Subscription.
You should now see a confirmation message.