[BUG] Pro → Max upgrade fails with "Payment failed" — extra usage credits charge succeeds on same card

[dimaku77-lgtm]

Preflight Checklist

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

What's Wrong?

Attempting to upgrade from Pro ($20/month) to Max plan on claude.ai fails with "Payment failed. Please try again later." error on every attempt.

Critical diagnostic: The same card successfully charged $6 for extra usage tokens on the same account the same day — which confirms the card and account are working fine. Only the subscription upgrade fails.

What Should Happen?

Subscription upgrades from Pro to Max successfully.

Error Messages/Logs

Payment failed. Please try again later. If the problem persists, contact support at https://support.anthropic.com/

Steps to Reproduce

1. Log into claude.ai with active Pro subscription
2. Go to Settings → Billing
3. Select Max plan
4. Confirm payment
5. Error: "Payment failed. Please try again later. If the problem persists, contact support at https://support.anthropic.com/"

Claude Model

Other

Is this a regression?

Yes, this worked in a previous version

Last Working Version

No response

Claude Code Version

browse version

Platform

Anthropic API

Operating System

macOS

Browser

Terminal.app (macOS)

Additional Information

No response

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