You can cancel your subscription from your transaction history in PayPal. A subscription can be canceled up until the day of the next scheduled payment.

To cancel an Active Subscription: 

1. Click the My Account tab.
2. Click the History tab.
3. Choose the Subscriptions field from the Show dropdown menu.
4. Check the From box and change the date back 2 years.
5. Click Search.
6. To view the details of a specific Subscription Creation, click Details in the Details column.
7. At the bottom of this page, click Cancel Subscription.
8. On the confirmation page, click Cancel Subscription again.