[BUG] Pro subscription not recognized - "There's an issue with the selected model" for all models on Windows

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?

Claude Code does not work with any model when authenticated with a Claude Pro subscription.
Every model (Sonnet 4.6, Opus 4.7, Haiku) returns the same error.
The web interface at claude.ai works perfectly fine with the same account.

What Should Happen?

Claude Code should recognize the active Claude Pro subscription and allow
using the included models without errors.

Error Messages/Logs

There's an issue with the selected model (claude-sonnet-4-6). 
It may not exist or you may not have access to it. 
Run /model to pick a different model.

Steps to Reproduce

1. Install Claude Code: npm install -g @anthropic-ai/claude-code
2. Run: claude auth login
3. Sign in with Claude Pro account via browser
4. Open Claude Code: claude
5. Type any message
6. Error appears regardless of which model is selected via /model

Claude Model

Sonnet (default)

Is this a regression?

Yes, this worked in a previous version

Last Working Version

Yes — worked previously

Claude Code Version

2.1.118

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

PowerShell

Additional Information

Account email: ander.jbc115@gmail.com
Plan: Claude Pro ($20/month)
The dashboard shows "API Usage Billing" instead of recognizing the Pro subscription.
Re-authentication and full config deletion did not resolve the issue.
My Claude Pro subscription started yesterday (April 22, 2026) and
Claude Code has never worked even once. This is my first day trying
to use it and it's already broken. Very disappointing experience for
a brand new paying customer.