Email from support about the Mastering Astronomy confusion...

Dear Doug Walling,

Thank you for contacting 24/7 Technical Support.

I apologize for the delay in resolution.

Your access code is valid for the Mastering Astronomy website.

Your instructors course ID is valid for CourseCompass.com and not Mastering.

Either your instructor created the course in the wrong website, or your school has ordered the incorrect book packages.

Please notify your instructor right away.

He may need to contact his sales representative or technical support if he needs assistance with correcting this issue.

Should you experience additional problems relating to this issue, feel free to reply to this message so we may assist you further.

For your convenience, visit our 24/7 Technical Support web site: http://247pearsoned.custhelp.com. For help using the web site, view the video at http://247pearsoned.custhelp.com/app/answers/detail/a_id/8648.

Thank you again for contacting 24/7 Technical Support.

Sincerely,
Chad
24/7 Technical Support