Once you are added as a speaker you would be able to access the audience portal in which you can make changes to your credentials.
[Note: Once you are signed up as a sponsor, your email id will get registered on the audience portal]
Click on “Login” and log in with the email id through which the sponsor is listed.
You will receive a registration password in your email. Enter the password and you would see the option to edit your details. Click on “Edit” to edit the details.