Thanks for reaching out to the Community forum, kilcoyne.
Normally, when updating billing information, it takes 24 hours for the system to process the payment. Once completed, you'll receive an email confirmation letting you know that everything is set. That said, I recommend waiting for a day.
To learn more about Billing information, check these articles:
If there's anything else I can do for you, get back to me by commenting below. You can count on me. Wishing you continued success.