Take below the basic followings:
1. If you can not find the confirmation email, check your spam mailbox or click the Resend Email button.
2. In last email you received, you have to confirm your email account. If you resend the email, all of the confirmation links in the old emails will expire.
3. Re-signing in our website or app. Although your account has already been confirmed, a temporary error can cause the message that you didn't complete email confirmation to be displayed incorrectly.