First make sure you’re using the email address associated with your Frontier account. If you’re unsure of your email address or need to update your email, you can find it on the website under My Account / My Profile / Contact Information, or in the app under Account Settings. If you’re having other issues verifying your Frontier account please contact Frontier Support to confirm your account details (email, contact phone number, last name, and service address) and then try again with the confirmed information.