I'm currently living in Vietnam but I use my cousin's address on Amazon to buy e-book because my cousin's residing in San Francisco. I bought 4 e-books and read many samples via Amazon U.S without any problem. However, i can't buy e-book on Amazon any more because, when I clicked on "Buy now with 1-click" button, a message popping in said : "please contact us or change your country to complete your purchase.............You can easily update your country for your Amazon account."
I'm totally clueless about what's happening to me. I usually buy e-book on Macbook and then transfer it to kindle Touch. Thanks a bunch in advance!!!