[BUG] Login loop "Let's create your account" on Mac/Windows/Browser after email verification – existing account not recognized – 9 days, support unresponsive

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?

Account Email: schottthomas@online.de
Conversation ID: 215475239458135
Date Issue Started: ~July 26, 2026
As of: August 4, 2026 (9 days unresolved)

Issue

After email verification and correct code entry, login redirects to onboarding page showing "Let's create your account" instead of dashboard. Happens on Mac app, Windows, and all browsers.

Confirmation it's server-side

• iPhone app: fully logged in, active subscription, works perfectly
• Verified email is correct (code arrives and validates)
• Not device/browser/cache related (same bug across Mac, Windows, Chrome, Safari)
• This is account-to-backend mapping failure

Support Status

• Escalated twice (Conversation ID 215475239458135)
• Zero response in 9 days
• Completely blocked from desktop/web access

Workarounds Tried

• Cache clear
• Different browsers
• Different devices
• Magic-link verification

What Should Happen?

Login again

Error Messages/Logs

Lets creat your Account

Steps to Reproduce

Always the same

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

All

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_