I enrolled my phone number but did not receive a text message. What should I do? - FAQ
Typically you should receive a text message within a few minutes after enrolling, however sometimes mobile carriers experience delays which slow down text message delivery. While waiting, make sure your phone has a wireless signal. In addition, be sure you entered the correct phone number on the enrollment site. If you still do not receive it, try to enroll again. If the problem continues, contact your wireless carrier to be sure text messaging is enabled on your phone.