New credit card information cannot be updated in Edit window

I understand this is a frustrating situation with your payment method update. While I don't have specific sources addressing this exact scenario in my available information, here are some options you should explore:

First, try using a different browser or clearing your browser cache and cookies, as sometimes technical issues with the payment update interface can be browser-related.

Second, consider temporarily adding an alternative payment method (such as a personal credit card, debit card, or bank account via direct debit) just to resolve the immediate payment issue and prevent further account restrictions. Once added, you can set this as your default payment method, which should then allow you to delete the expired card. After that, you can re-add your business credit card with the updated CVV and expiration date, then switch back to using it as your default.

Third, since you have an open support case, escalate it by requesting to speak with a supervisor or asking for the case to be escalated to the billing team specifically. You can also try reaching out through the AWS Support Center chat or phone support for more immediate assistance, as this is affecting your account access.

If you're unable to add any temporary payment method and your support case isn't progressing, you might also try contacting AWS through their social media support channels or the AWS forums, as sometimes alternative channels can help expedite resolution of urgent billing issues.

The key is to break the cycle by temporarily using another payment method to unlock the ability to manage your payment methods properly.