[BUG] No way to change the extra-usage payment method on a Google Play billed account

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

Title: [BUG] No way to change the extra-usage payment method on a Google Play billed account

Filed here for want of an engineering channel. This is a billing-system bug, not a Claude Code bug, and I expect it may be marked out of scope; the support messenger routes only to the automated assistant, which cannot act on it, and there is no other way I can find to put a reproducible defect in front of an engineer. Please redirect it rather than close it if there is a better home.

What's wrong

My account has two separate payment methods, and the interface can reach only one of them.

The subscription is billed through Google Play, where my cards are current and working. Extra usage is billed separately, on Anthropic's own side, against a different card. That card has reached its issuer's monthly limit, so extra usage now fails; subscription payments continue normally.

There is no path to change the card used for extra usage.

Expected

Either an editor for the extra-usage payment method, or an email link that reaches it rather than the Google Play subscription settings.

Actual

No reachable path exists. As far as I can tell, an account in this state can never change its extra-usage card, however many working cards the user has. This is likely to lose Anthropic a lot of money, so it should be of some concern.

Impact

Extra usage is unavailable to me indefinitely. I have fallen back to a separate API account with its own card, which serves Claude Code but not the web or desktop chats, so those stop at the subscription limit with no way to pay for more.

Environment

Subscription billed through Google Play (subscribed on Android). Extra usage billed by Anthropic against a separate card. A third payment method again on the Console account. Web, desktop and Android clients all show the same behaviour.

I can supply account details, the payment-update email and timestamps privately.

What Should Happen?

See above.

Error Messages/Logs

Steps to Reproduce

1. Subscribe on Android, so that the subscription is billed through Google Play.
2. Enable extra usage, which is billed by Anthropic against a separate card.
3. Let that card fail (mine reached its monthly limit).
4. Extra usage stops. The payment provider raises the correct payment-update event and I receive the correct "update your payment method" email.
5. Follow the link in that email. It resolves to a live endpoint, which redirects to the Google Play subscription's payment settings: the wrong payment system, and one whose cards are already correct.
6. Look for an editor for the extra-usage payment method anywhere in Settings or Usage. There is none.
7. Disable extra usage and enable it again. The same unusable card is retained.

Claude Model

Not sure / Multiple models

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.283 (Claude Code)

Platform

Anthropic API

Operating System

Other Linux

Terminal/Shell

Xterm

Additional Information

_No response_