It was absolutely fake interview. The first round was a general one where Vanumpai Kanpicha who tried to hide herself. The second round was "a technical interview" without a single tech question and lasted for about 5-10 mins. The third round was with Behrashi Mahsa, a slighly tech interview and lasted for about 10 mins. Then, when it was time for the final interview they started to play the game: they scheduled the date/time for the interview and then rescheduled for another date and so on and it lasted for couple of weeks. So they intentionally did not set up the date/time and their american office never replied directly. Eventually Mokkhasamit Worawit wrote that I have to be patient and wait for the date/time for the final interview and disappeared. So it was initially planned fake interview process. The same strategy I saw in the other fake interviews with some other "undercover companies".