Currently, there is no easy, direct way to change your billing information with Tube Toolbox. (We are working on it)
To change your billing details, you must do the following:
- Cancel your current Subscription. After you cancel your subscription, you will receive an email with the date your account will be downgraded to a personal subscription. How-To: Cancel your Professional Subscription
- Sign up again (without paying the activation fee) using this link after your account is downgraded
https://www.tubetoolbox.com/purchase_reactivate.aspx
That's it. Your old subscription is cancelled and you now have a new subscription with your new billing details.