If the subscription is created on PayPal.com/Stripe.com Or Jvzoo/WarriorPlus/Thrivecart account, you can simply login into your respective account and cancel the subscription. You can Google the steps to do it.
OR,
If you can't find it or are unable to do so, then kindly drop us an email at support@marketro.com with the following details:
Subject: Cancel My Subscription
1. Paypal/Stripe email address (through which you made the payment)
2. Paypal / Stripe / Jvzoo / WarriorPlus / ThriveCart Transaction ID.
3. Product Name.
Note: Please make sure you are writing us from your Sign-up email so that we can track your record correctly and deliver prompt service.