If you have registered online, you can login here.
Enter Email address in username to login in tapi2vapi.com
Enter your PIN (4-digit password) that you set at the time of registration with tapi2vapi.com
If it says : PIN (password) is not correct then go to Forgot Your PIN link and get a new PIN in your email. If it says : Your email-ID doesn't exist then sign-up first.
You must have been registered on tapi2vapi.com
Online registration is FREE. It takes only 5 minutes or less.