You will automatically receive an emailed receipt each month when your payment is made, at the email you used to create the subscription.
The email should be similar to this:
If you haven't seen it, don't forget to check Spam or Junk Mail. Please notify us for any changes in billing/contact information so that we can help keep the account up-to-date.
If you have any trouble, please contact our Support team by clicking "Submit a request" at the top right of this page for further assistance.