Congrats, American also here applying in Vietnam soon.
I have a question regarding the bank statements,
Sometimes my statement for any given month can be 2-3 pages long. Did you print all the pages and gave it to them? Or just the final page that shows the starting and ending balance?
I think maybe there needs to be some more clarification on the email they sent you, I think they want to see the ending bank balance and statements for all 6 months but the final and current balance is what matters most.
Also did they send you an email? Because I emailed them 2 days ago and they said they need 6 months of bank statements and I can move the funds into the account the day before the appointment