If the subscription is created on Jvzoo.com or PayPal.com account, you can simply login into your respective account and cancel the subscription. You can google the steps to do it.
If you can't find it or unable to do so, then kindly drop us an email at email@example.com with the following details:
Subject: Cancel My Subscription
1. Product Name:
2. PayPal transaction ID and/or JVZOO transaction ID.
3. PayPal email address through which you made the payment. (Or your account email address or Username)