Says I have to cancel manually. How?

Would be nice if you gave instruction on how to "cancel manually"

If you're referring to your subscription, please follow this guide: https://www.jotform.com/help/341-How-to-Downgrade-Subscription-Back-to-Free-Account 

Now, if you're referring to cancel a payment that was made through your form then you will need to do it from the payment gateway you're using. 

If you're referring to something else, please let us know.