Yu-Gi-Oh! Duel Generations will no longer be available to play online after 30th September 2020.
If you have any questions about the game, please go to:
https://www.konami.com/games/us/en/pages/support/
A Duelist Account allows your Campaign progress, custom Decks, Cards and Duel records to be saved to a remote server to protect this information from being lost. It also allows you to play with your accumulated Cards and continue your Campaign progress on any supported device with Duel Generation installed.