[BUG] Cannot upgrade to Max x5 from Pro plan. Stripe error.

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?

I cannot upgrade from Pro to Max. This is a similar error to what everyone is reporting. It’s been days since I first tried.

What Should Happen?

I should be able to easily upgrade from Pro to Max x5

Error Messages/Logs

Errors differ between sessions. From general error messages to Stripe errors. The console shows an error with how Stripe is configured.

Steps to Reproduce

1. Go to upgrade plan
2. Try to upgrade plan: select new plan, configure payment method, press pay.

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

n/a

Platform

Other

Operating System

macOS

Terminal/Shell

Other

Additional Information

_No response_