The codes we send for email verification must be used within 15 minutes of your request. Failures are often due to mismatched requests. Each request for a new code invalidates all previous codes requested. Please ensure the code you use is the most recent code we have sent you.
Note: If you've made multiple requests, wait for all of the requests to be received in your email, delete all of the codes you've received, and then request a single new code and wait for it to be received.