According to OpenAI on Twitter, users facing issues redeeming API credits should update to the latest version of Codex CLI by running 'npm i -g @openai/codex@latest' and then executing 'codex --free'. This update is essential for blockchain and crypto developers who rely on OpenAI APIs for smart contract automation, trading bot development, and AI-driven trading signals. Ensuring seamless API access minimizes operational disruptions for crypto traders and developers working with DeFi protocols. OpenAI also provides additional troubleshooting and integration guidance in their help center (source: OpenAI Twitter, May 18, 2025).