HCMC is among the most popular for DTVs, very high rate of approval as this forum shows. There must be something they are not happy with but it is frustrating they have not told you.
Yes pending approval is a good sign but it is not a guarantee of approval or that you will not be asked for more docs. Best to relax and think positive 😊.
I thought it was rescinded, as he had applied for it while in Thailand. The agent never told him he had to be outside LOS during the application process allegedly. Similar to the American. He had to leave the airport.