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There could be several reasons why your React code fails to display information retrieved from an API fetch. Here are some possible reasons:

1. Error in the API endpoint: Make sure that the API endpoint is correct and functional. If there's an error in the endpoint, your fetch request may return an error.

2. Incorrect handling of the response: Ensure that you're handling the response from the API fetch correctly. Sometimes, the response may contain nested objects or arrays that you need to parse and assign to state variables.

3. Incorrect rendering: Make sure that you're rendering the fetched data correctly in your React components. If you're using JSX, you need to make sure that you're accessing the state variables correctly and passing them to the components.

4. Asynchronous programming: Remember that API fetch requests are asynchronous, and it may take some time to receive the response. You need to use async/await or Promise.then() to handle the data returned by the fetch request.

5. CORS policy: If you're trying to fetch data from a different domain, you may encounter CORS errors. Check the API documentation for any CORS requirements and ensure that your fetch request complies with them.