adding ChallengedWithQuestions is not challenging with questions on the sandbox

I am playing around with asking signers to answer questions before signing the application to add some fraud mitigation. I added the following: var packageBuilder = PackageBuilder.NewPackageNamed(signingPackage.Name) .WithSettings(DocumentPackageSettingsBuilder.NewDocumentPackageSettings() .WithHandOverLinkHref(signingPackage.HandOverLinkHref) .WithHandOverLinkText(signingPackage.HandOverLinkText) .WithDecline() .WithDeclineOther() .WithMaxAuthAttempts(5) .WithoutOptOut() .HideOwnerInPersonDropDown() .WithoutDialogOnComplete() .WithoutCaptureText() .WithoutLanguageDropDown() .WithCeremonyLayoutSettings(CeremonyLayoutSettingsBuilder.NewCeremonyLayoutSettings() .WithoutGlobalDownloadButton() .WithLogoImageSource(signingPackage.LogoUrl) .WithoutSessionBar() .WithoutGlobalNavigation() .WithoutBreadCrumbs())) .WithLanguage(Thread.CurrentThread.CurrentUICulture) .WithAutomaticCompletion(); foreach (var signer in signingPackage.Signers) { packageBuilder.WithSigner(SignerBuilder.NewSignerWithEmail(signer.Email) .ChallengedWithQuestions(ChallengeBuilder.FirstQuestion("Type in 12345").Answer("12345").SecondQuestion("test").Answer("test")) .WithFirstName(signer.FirstName) .WithLastName(signer.LastName) .WithTitle(signer.DisplayTitle) .SigningOrder(signer.SigningOrder) .WithCustomId(signer.CustomId)); } When I generate the signing package, there are no challenge questions presented, it just goes straight in. Is there something I am missing? do I need to set a flag at the package level, or change an account setting or something. I am comparing my code to the examples in the documentation, and I don't see anything that jumps out at me.