Subscribed from within the iOS or Android app?
If you're currently within a 7 day trial, you can opt-out via your subscription settings
You can find details about how to deactivate the upcoming subscription's auto-renewal function through the following links:
Subscribed through the Website?
If you're currently within a 7 day trial, you can opt-out any time in your account settings before the 7 days end.
You can cancel your subscription towards the current billing period's end in your account settings.