Last week something strange happened to me too. I put 2 addresses, one for payment, and other for shipping, I don't know why the delivery address is my payment address now. I have the payment address in both sides. My payment address is in Colombia and my shipping address is in EEUU. If I look in "My account" on my profile I have the correct shipping address. I used "Contact Us" form on the help page twice, but they don't answer me yet.