Has anyone got Interview Waiver (IW) Appointment slots (drop-box)?

Hi Arun
Have you fix the problem?.. “You can not currently add this dependant”

I am trying to add my child as a dependent but the error message came " You can not currently add this dependant".
Can you please share your experience, on how to solve this problem?

Last year we processed a visa (H4) in South Korea, and now we want to change the visa type (j-2) from the US embassy in India.

can you please help me