Tiger Eye. I happen to be the owner so you can feel free to ask me any questions and if for whatever reason you want to try another gym I'm more than happy to give my recommendation. I've been in the Martial Arts industry for a long time.
For full transparency I own a Muay Thai gym in Bangkok.
We had students apply in HCMC and normally it's been a quick and easy process but there was a week where two students got additional requests that didn't make any sense. They resubmitted and got approved, after that one week things seemed to be back to normal.
We had one person apply in Japan as a non resident and get it but apparently they had to write a long essay and it was unlikely many others would get the same treatment. This was back in August early into the DTV.