But what about the page of my interview appointment, I'm unable to change the information on that... They said the only way to change is to cancel the appointment and rebook.
This is the warning given above -
Warning: The information entered below must match the applicant’s passport and DS-160 Number application. Any discrepancy will result in delays in the return of the applicant’s documents.
If you are completing the information below on behalf of a child, please make sure that you enter the child’s information, not the parent’s.