If you have created a subscription with our old payment provider - FastSpring, then read the below article. If not follow this article.
MockFlow subscriptions are automatically renewed based on its subscription time period - monthly, quarterly, half-yearly or yearly. To stop renewing, they can be canceled anytime. In order to cancel an active MockFlow subscription, follow the below steps:
1Go to your profile and choose 'Subscriptions' from the sidebar in account settings.

2Under the 'Subscriptions' tab, click the 'Cancel' button next to your subscription item.

3This will open your payment page associated with that subscription, from where you have to finally cancel the subscription as shown below.
