On the right hand side, you'll see your current billing date under the billing date section.
Click Change the billing date, then select the day of the month you’d like future payments to be made.
Click Save to view the prorated charges that will apply.
Click Confirm to accept the charges and update your billing date. Prorated charges (if any) will be applied immediately, and your subscription will renew on your selected date going forward.
Can I change my billing date if I have overdue invoices?
Yes, you can change your billing date if you have only one overdue invoice.
However, if you have multiple overdue invoices, you’ll need to pay the outstanding balance before selecting a new billing date.