You may not have access to a specific feature because some features are released on a limited basis. During a limited release, we do make changes to a feature in order to polish and improve it before we feel it is ready for everyone to experience. This means the final state of a feature may be different from its initial limited release, because we have made changes we believe players will like.
Please make sure your app is updated to the latest version to ensure you have access to the latest features.