[BUG] Claude Pro gift subscription downgraded to Free after 18 days

What's Wrong?

I redeemed a Claude Max 5x gift subscription on March 30, 2026.
The redemption was confirmed successful. I had full Max access for
approximately 18 days. Around April 18, 2026, my account was
silently downgraded to the Free plan — with no email notification,
no warning, and no action on my part.

Unlike some related reports where Billing still shows Max as active,
in my case both Settings → Account and Settings → Billing show Free plan.
The subscription has fully disappeared from my account.

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Account Details

| Field | Value |
|---|---|
| Email | vladominator1@gmail.com |
| Plan | Claude Max 5x (gift) |
| Gift activated | March 30, 2026 |
| Expected expiry | ~April 30, 2026 |
| Downgraded | ~April 18, 2026 |
| Days of access lost | ~12 days |
| Settings → Account | Free plan ❌ |
| Settings → Billing | Free plan ❌ |

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Additional Information

• No usage policy violations
• No plan cancellation initiated by me
• No changes to account settings
• Logged out and back in — no effect
• Tested on multiple devices — same result

Expected Behavior

Account should remain on Claude Max 5x for the full gift duration
(until approximately April 30, 2026).

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Actual Behavior

Account shows Free plan everywhere — both in Account settings and
Billing. All Max features are inaccessible. No active subscription visible.

---

Evidence

• Screenshot 1 — Settings → Billing showing Free plan ❌

<img width="1313" height="582" alt="Image" src="https://github.com/user-attachments/assets/1a68b2ca-7cec-49c3-8621-2810840574c6" />

• Gift redemption confirmation email (March 30, 2026)

<img width="691" height="517" alt="Image" src="https://github.com/user-attachments/assets/52cee7e0-fff4-418d-b98b-3e4bb5c39f2c" />

What Should Happen?

Max 5x plan should be restored for the full remaining gift duration.
Approximately 12 days of paid access ($~40 value) have been lost
with no resolution path through current support channels.

Please have someone on the backend team verify the gift redemption
status and manually restore the Max plan entitlement for this account.

Error Messages/Logs

Steps to Reproduce

1. Receive Claude Max 5x gift subscription link via email
2. Redeem on claude.ai (web) — redemption confirmed
3. Use Max features normally for ~18 days
4. Account silently reverts to Free plan — no notification, no reason given

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

1.3883.0

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Other

Additional Information

_No response_