Using an alias or social media identity can prevent you from verifying your account, as the name you enter in the registration process must reflect your legal identity.
In this case, you need to upload all your verification documents and once the documentation is uploaded contact Customer Services to send the necessary written request. This kind of request is kept in the utmost consideration and usually gets handled within one business day.
Following a verification process you will receive an answer either approving or rejecting the request to update the registered name in the account