Let's check a few things to see why your email can't be verified.
Did you sign up with the correct email? A small typo will send the verification email somewhere else. If that's the case please create a new account with a valid email address.
If it is the correct email, you may want to search both your Inbox and Junk/Spam folders for an email from email@example.com.
Whitepages Pro requires a valid email address that can receive email from Whitepages to start an account.