Judging by reddit, chances of it been cancelled are high, but I don´t care.
Ok, I did it! I was able to get it through, here is what I did:
Everything with google translate
-Added Ness, Lucina and Robin to the cart (Those are the ones I worry about).
-Checked out.
-It asked me for my name and my phonetic name, I put my normal name in the first one and then used a english to katakana convertor for the phonetic one.
-Then it asked me for postal code, this one was the tricky part:
-Click on the Search addres part, then below it will give you lots of addresses, if you use Tenso most likely is Tokyo Metropolitan and Adachi-kou. Then it will give you the chance to enter the Address manually, its below in a big red button, look for it!
Then you can just paste your info as usual, remember you need a forwarding service for it to work and be sent worldwide, since they only ship to Japan.