The system is not accepting my mobile phone number. Why is this happening and what do I do now?

It is possible that your mobile phone number was already validated by another user. This could happen in error, or if you shared your mobile phone number with a family member, they may have validated the number before you.

We recommend using your unique email address to validate your account. From the Verify Your Account page, click on the Use email instead link to use your email address to validate your identity.