I need to change the payment card for my subscription but the system is rejecting the card

Helping you updating your credit card for the payment subscription is my top priority, akumar99.

There are times when a browser's cache data becomes full or damaged. When this happens, pages don't load properly. Cases like this, let's access QuickBooks Online (QBO) using the browser's private browsing mode. This doesn't use the existing cache data and helps us confirm browser-related issues.

Then, update the credit card info and let's make sure it is not expired. 

If it works, go back to the original browser and clear the browser's cache to delete the temporary Internet files. You can also use a supported, up-to-date browser.

If the same thing happens, please access the Customer Account Management Portal Site (CAMPS) to update your billing information.

Here's how:

1. Sign in to camps.intuit.com.
2. Find your app or subscription in the Products & Services list.
3. Choose Details.
4. In the Billing Information section, find Payment Method, then select Edit.
5. Update your information.
6. Hit Save and Close.

If you're having an issue when signing your account, please refer to this article to troubleshoot the problem: Why can't I log in to CAMPS?.

To learn more about updating payment information, just check out this article: Update the payment information for your subscription.

Fill me in if you need a hand with managing your account or any QBO related. I'm glad to help.