It is weird. I have seen and used it everytime including recently except one time about a month ago. Possibly their server somehow can misidentify an IP address? No i just made that up. No idea why. But this happened to me once too.
It has only been tried once with me after leaving Laos and I said ok but only if you give me an official receipt and they backed off . I think it was like 200 ThB Mukdahan c 2012
can you guys repeat the whole conversation except in Swedish and Danish please? It would be very entertaining and also interesting to language geeks like me 555