If you have not verified your account within the 24 hours of receiving the verification mail, you might have to generate another mail to get a new link to verify.
To generate a new mail, log into your account and click on the red bar on the top of the screen with the message "Your mail is not verified. Click here to verify.."
Once you click this you will receive a mail which would contain a link to verify within 24 hours post which it will expire again. Kindly get in touch with us if you still face any difficulty with this.