From what I understand, your name in Amazing Charts must match exactly what is on either your license or passport.

From the setup document:
Quote
If you are prompted to go through the webcam process with Exostar, please make sure
that the name being used is the same name that shows on your legal document (driver?s license or passport).
If this does not match, update the information within your EHR before starting Exostar registration

There is also a post on the website: http://amazingcharts.com/support/message-about-epcs/

Josue
Tampa, FL