Inviting Dad & Sister for my Graduation in December

[aao17ep 0]

 

Goodmorning.

 

I am trying to invite my Father and my Sister for my graduation here in the US. I already filled a seperate DS 160 for both, i also included in each persons DS 160 that both my Dad and Sister will be travelling together. When i was filling Dad's Visa appointment page i included my Sisters visa payment reciept number and her ds 160 confirmation number to show that they are together and hopefully they can be interviewed together and i also printed out the visa appointment page which showed that there are 2 applicants. But the visa appointment page only had my Dads name on it.

 

I then tried filling a seperate visa appointment for my Sister, so that she can also have her own seperate visa appointment but i got this message below when i was about submitting my Sisters.

 

"Your personal details match the profile which already exists in our database. The user id of that profile is "xxxxxx@gmail.com ". If you created this profile in the past and forgot the password, please use “Forget your password?” function on the login screen. If this email isn't familiar to you, please contact our helpline through Provide Feedback option in the left menu or by sending the email to our helpline. Please don't forget to attach the scanned copy of your passport’s data page to your feedback message/email"

 

Will my Dad's visa confirmation page cover the two of them?