I notice it is possible for you to provide an letter advising for Visa purposes who is traveling. And I have the same problem to apply VISA using the ticket order emails, and my friends' name does not appear on the ticket order email.
My Order Number is Order#: ITE168997, and the travellors are Zeyang LIN, Li YAO, Yixin YANG, Yidan ZHANG.
My email address is email@example.com
Thank you so much!