The Rayman Legends Challenge App that launched in April for Wii U is no longer being supported by Ubisoft and does not appear in the Wii U eShop.
"Sorry, the Challenges are now closed in this game," an in-game message reads when trying to enter the multiplayer challenges. It also alerts players that the full version of Rayman Legends is available for download in the Wii U eShop.
Ubisoft announced the app in February as compensation for the game's delay. Rayman Legends was originally slated to be released as a Wii U exclusive on Feb. 26, but was delayed until September to launch simultaneously on PlayStation 3, Xbox 360 and Wii U.
For more on the game, check out Polygon's Rayman Legends review.