You must be on at least Fold app version 139.5.0. Please restart your app at least once after the download to get the latest updates to the game, which is still in beta.
After you are able to update to this version, if you have a Fold Card, you should have access to the game by the first week of December. Support cannot help you get access to the experience any earlier.
The game is currently not yet available to non-Fold Cardholders - sign up for a FREE Fold Card to get in the queue!