If you bought them directly on our Maxon Shop, you should log into my.maxon.net and follow these steps. 

• Click on your name and select Order History:

• Next, navigate to Order History > Details to manage your product subscription:

• Next, toggle Automatic Renewals to Off via the radio button in order to cancel. When you change this, you will see the following screen:

• Make sure you accept this change. Once you do, your subscription will not renew at the end of the term. 
• Please note that you must cancel your auto-renewal 3 days before the expiration date for monthly subscriptions and 10 days before the expiration date for annual subscriptions.
• If you have any questions or concerns, file a ticket with Support using the Submit a Request link above.