Nintendo has announced that the Wii Shopping Channel will close on January 31st 2019. You can add points until 03/27/2018 and will still be able to buy Wii Ware and Virtual Console games until 01/31/2019. This move also affects the backwards-compatible one on the Wii U.
“Redownload of already bought software, as well as the Wii -> WiiU data transfer will stay online for the time being but will also shut down at an undetermined date in the future.”
