Pokemon sword game card and digital expansion pack [closed]

Trying to help my son. He has a gamecard for pokemon sword. He purchased the expansion pack from the online store and can't get them to work together. Can anyone help me. The meltdown is real.


As per Wondercricket's comment, the expansion pack must match the game version. If your son purchasd the expansion pack for Pokemon Shield, it will not work with the gamecard for Pokemon Sword.