Thanks for updating your billing information, David.
To verify if you've successfully update your billing information or not, you can go back to the Account and Settings. It should show Subscribed.
Click the Gear icon in the upper-right corner and select Account and Settings.
Select the Billing & Subscription tab and go to the QuickBooks section.
Next to Subscription status, it should show Subscribed.
Payment method should also show the updated information.
Otherwise, we'll have to do a few troubleshooting steps to get this working. Cache speeds up browser processes. However, it can also cause unexpected issues. Here's how to get rid of this possibility:
To begin the troubleshooting, you can open a private browser because it doesn't store cache. Then, review and update your billing information again.