Same problems everywhere
I was experiencing the same problem too!
It's either they dont ship overseas, or their English website is too difficult to understand because they are using a translator software and the english ends up jibberish.
Rakuten is good but they have limited items, and its sooo frustrating!
Recently I have been using buy4ujapan.
I can't add links yet because I am new to the forum, but you just need to add a dot com after the site name.
Maybe you should go take a look