We're sorry to see your customer leaving 😢 but we know sometimes this happens. Customers can cancel a subscription on their own by following these instructions or you can help them as an admin.
If the subscription originated through an app purchase, the end-user must cancel through the app through which the subscription was purchased. Cancelling an in-app purchase via the web UI will not cancel their app based subscription. An admin cannot cancel this for an end-user.
Navigate to the customer you want to cancel a subscription for under People > People and click Edit. Under the Access tab select the three dot menu on their active subscription and click Cancel.
NOTE: By selecting Cancel, the customer will have access until the end of paid billing period. If you choose Delete, their access will be removed right away.