After successful registration, you should receive a confirmation email asking you to activate your email address. Please, check that you have received this email.
In case you didn't receive the email, either the registration process was not completed or the wrong email address was entered. If so, you will need to start again.
If you are still unable to connect to your profile, check your email inbox (and especially your spam filter) to see whether you have had a message from our team indicating that your profile was closed.