It says: Failed to send code

The sign-in code could not be sent.

1. Check that your email address is spelled right. To change it, tap Use a different email.
2. Check that you have Wi-Fi or mobile data.
3. One code can be sent each minute. Wait until the countdown ends, then tap Resend code.

If a code arrived a few minutes ago, look in your inbox and your spam folder, and type it.