Xcode/Codex - Your request couldn't be completed

Tried deleting everything as ChatGPT advises and still facing the same issue since yesterday. This is my environment: Xcode Codex OAuth login completes successfully and browser shows “Signed in to Codex”, but Xcode immediately returns to “Not Signed In” and shows “Requires Eligible Account or API Key”. Terminal Codex works with v0.137.0. Xcode Codex account validation fails after successful OAuth callback. Xcode version: 26.4 / 17E192.