The links 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 link invalidates all previous links requested. Please ensure the email you open with the email confirmation link is the most recent link we have sent you.
If you've made multiple requests, wait for all of the requests to be received in your email, delete all of the emails you've received, and then request a single new link and wait for it to be received.