If you have been accepted into the wrong course (and your access has been paid for), the best thing you can do is contact your instructor. They will need to contact our Support Team to resolve the issue.
If you just attempt to sign up for the additional correct course the program will expect you to pay another enrollment fee for the new course (as the program does not know that you are not just signing up for two courses that you need).
Additionally, The Platinum Educational Group Customer Support Team needs to be contacted by a user in a position of authority at the institution, as students accepted into a course will not be moved to another course upon request from the student alone (since someone in authority at the school believed you belonged in the original course).
In the meantime, if you want to learn more about our transfer policy, you can review it here.