Really this is exactly what we will tell you when we call you back.
If you cannot get started it is because you missed a step.
FIRST Go look in your email in the spam or the trash. Really look, if YOU registered, then YOU sent YOU the email to the email address YOU provided, so search for Start Flagging in your email. Really YOU sent it, and the instructions are in the email. Follow those instructions and YOU will be going in just 2 minutes or less. If you mistyped your email address then that is another problem.
This registration email frequently gets sent to spam even though your purchase receipts are sent to your inbox.