Guest passes link shows as invalid despite 2 passes remaining

Description

When using /passes command in Claude Code, it shows 2 guest passes remaining and generates a referral link (https://claude.ai/referral/...), but the link appears to be invalid/not working when shared.

Steps to Reproduce

1. Run /passes in Claude Code CLI
2. Dialog shows "Guest passes · 2 left"
3. Copy the generated referral link
4. Link does not work / shows as invalid

Expected Behavior

The referral link should be valid and allow the recipient to redeem a free week of Claude Code.

Environment

• Platform: Linux (Ubuntu)
• Claude Code CLI (latest)