How to change subscribers email address if they subscribe & have monthly payments?

 I have a monthly subscriber. They are automatically billed each month. They changed their email address. How do I change that for them?

Do you mean to change the email address entered on the form submission? If so, you may edit the submission to change the email address. Please refer to the guide below:

https://www.jotform.com/help/325-How-to-Edit-Submissions-Made-on-Your-Forms

The subscription created in the payment gateway will not be changed and continue to bill the user till the subscription is canceled. Let us know if you are referring something different. We will be happy to help.