Pokemon Bank still unavailable in Japan, Poke Transporter back up

Pokemon Bank is still unavailable in Japan, as is the case with other territories. However, Nintendo has re-added Poke Transporter.

To access the app, users will need to visit a certain area inside Pokemon Bank, which will then load a specific page inside the eShop. Poke Transporter can’t be found on the eShop by any other means.

Source