While you're changing the date, following orders will be rescheduled based on this next order and the delivery frequency of the subscription.
Login to your customer portal to adjust the order date:
In the View your next order tab, click Reschedule.
The reschedule modal will display an estimated charge date to reschedule the order based on the frequency of the subscription. For example, if your subscription is on a 30 day frequency, the modal will suggest a reschedule date one month from the original charge date.
Select the new order date and click Save changes to confirm.