Prachin buri province ; it worked for me at the beginning, two years ago , during one year ; suddenly, in march last year, always " rejected " and I did everything correct ; the I.O told me " It 's Bangkok " , as if the decision came from somewhere in BKK ; and suddenly, last month, it worked ! " accepted "
I think there was a bug somewhere and they have correct it
my opinion ; try, again and again, maybe one day it will be Ok