You can cancel or make changes to your subscription by going to the profile of an author that you’re subscribed to, hitting “More,” under their profile name, and clicking on “Manage Subscription”
From there, you can choose to unsubscribe from an author by clicking on “Unsubscribe Now” next to your subscription. Don’t worry, it will ask you to confirm that you want to unsubscribe first!
If you cancel your subscription, it will end automatically on the next renewal date. Until that date, you will continue to have subscriber access to that author.