Azure B2C Custom UI empty div API - azure-ad-b2c

Question

I am trying to customize the password reset page in Azure B2C. I followed the documentation of Microsoft: https://learn.microsoft.com/en-us/azure/active-directory-b2c/customize-ui-with-html?pivots=b2c-custom-policy
everything looks ok, but after opening the page with run now in custom policy the custom page is showing without the fields from the API.
empty api
for test I set this custom page in the userflow, and over there the page is showing with the input fields. So it looks like there is something wrong in the custom policy, but everything looks ok I guess.
<ContentDefinition Id="api.localaccountpasswordreset">
<LoadUri>https://company.blob.core.windows.net/azure-b2c/custom-selfAsserted.html</LoadUri>
<RecoveryUri>~/common/default_page_error.html</RecoveryUri>
<DataUri>urn:com:microsoft:aad:b2c:elements:selfasserted:1.1.0</DataUri>
<Metadata>
<Item Key="DisplayName">Local account change password page</Item>
</Metadata>
</ContentDefinition>
Does someone have a suggestion why the API fields aren't showing up?
Custom policy of Sendgrid extensions:
<?xml version="1.0" encoding="utf-8" ?>
<TrustFrameworkPolicy
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns="http://schemas.microsoft.com/online/cpim/schemas/2013/06"
PolicySchemaVersion="0.3.0.0"
TenantId="tenant.onmicrosoft.com"
PolicyId="B2C_1A_SendGrid_Extensions"
PublicPolicyUri="http://tenant.onmicrosoft.com/B2C_1A_TrustFrameworkExtensions">
<BasePolicy>
<TenantId>tenant.onmicrosoft.com</TenantId>
<PolicyId>B2C_1A_TrustFrameworkBase</PolicyId>
</BasePolicy>
<BuildingBlocks>
<ClaimsSchema>
<ClaimType Id="Otp">
<DisplayName>Secondary One-time password</DisplayName>
<DataType>string</DataType>
</ClaimType>
<ClaimType Id="emailRequestBody">
<DisplayName>SendGrid request body</DisplayName>
<DataType>string</DataType>
</ClaimType>
<ClaimType Id="VerificationCode">
<DisplayName>Secondary Verification Code</DisplayName>
<DataType>string</DataType>
<UserHelpText>Enter your email verification code</UserHelpText>
<UserInputType>TextBox</UserInputType>
</ClaimType>
</ClaimsSchema>
<ClaimsTransformations>
<ClaimsTransformation Id="GenerateEmailRequestBody" TransformationMethod="GenerateJson">
<InputClaims>
<InputClaim ClaimTypeReferenceId="email" TransformationClaimType="personalizations.0.to.0.email" />
<InputClaim ClaimTypeReferenceId="otp" TransformationClaimType="personalizations.0.dynamic_template_data.otp" />
<InputClaim ClaimTypeReferenceId="email" TransformationClaimType="personalizations.0.dynamic_template_data.email" />
</InputClaims>
<InputParameters>
<!-- Update the template_id value with the ID of your SendGrid template. -->
<InputParameter Id="template_id" DataType="string" Value="d-8d30a9a4de9a4a82cd6b1"/>
<InputParameter Id="from.email" DataType="string" Value="email#domain.com"/>
<!-- Update with a subject line appropriate for your organization. -->
<InputParameter Id="personalizations.0.dynamic_template_data.subject" DataType="string" Value="Email verification"/>
</InputParameters>
<OutputClaims>
<OutputClaim ClaimTypeReferenceId="emailRequestBody" TransformationClaimType="outputClaim"/>
</OutputClaims>
</ClaimsTransformation>
</ClaimsTransformations>
<ContentDefinitions>
<ContentDefinition Id="api.localaccountsignup">
<DataUri>urn:com:microsoft:aad:b2c:elements:contract:selfasserted:2.1.0</DataUri>
</ContentDefinition>
<ContentDefinition Id="api.localaccountpasswordreset">
<LoadUri>https://b2cstorage.blob.core.windows.net/azure-b2c/custom-selfAsserted.html</LoadUri>
<RecoveryUri>~/common/default_page_error.html</RecoveryUri>
<DataUri>urn:com:microsoft:aad:b2c:elements:contract:selfasserted:2.1.0</DataUri>
<Metadata>
<Item Key="DisplayName">Local account change password page</Item>
</Metadata>
</ContentDefinition>
</ContentDefinitions>
<DisplayControls>
<DisplayControl Id="emailVerificationControl" UserInterfaceControlType="VerificationControl">
<DisplayClaims>
<DisplayClaim ClaimTypeReferenceId="email" Required="true" />
<DisplayClaim ClaimTypeReferenceId="verificationCode" ControlClaimType="VerificationCode" Required="true" />
</DisplayClaims>
<OutputClaims>
<OutputClaim ClaimTypeReferenceId="email" />
</OutputClaims>
<Actions>
<Action Id="SendCode">
<ValidationClaimsExchange>
<ValidationClaimsExchangeTechnicalProfile TechnicalProfileReferenceId="GenerateOtp" />
<ValidationClaimsExchangeTechnicalProfile TechnicalProfileReferenceId="SendOtp" />
</ValidationClaimsExchange>
</Action>
<Action Id="VerifyCode">
<ValidationClaimsExchange>
<ValidationClaimsExchangeTechnicalProfile TechnicalProfileReferenceId="VerifyOtp" />
</ValidationClaimsExchange>
</Action>
</Actions>
</DisplayControl>
</DisplayControls>
</BuildingBlocks>
<ClaimsProviders>
<ClaimsProvider>
<DisplayName>Local Account SignIn</DisplayName>
<TechnicalProfiles>
<TechnicalProfile Id="login-NonInteractive">
<Metadata>
<Item Key="client_id">ProxyIdentityExperienceFrameworkAppId</Item>
<Item Key="IdTokenAudience">IdentityExperienceFrameworkAppId</Item>
</Metadata>
<InputClaims>
<InputClaim ClaimTypeReferenceId="client_id" DefaultValue="ProxyIdentityExperienceFrameworkAppId" />
<InputClaim ClaimTypeReferenceId="resource_id" PartnerClaimType="resource" DefaultValue="IdentityExperienceFrameworkAppId" />
</InputClaims>
</TechnicalProfile>
</TechnicalProfiles>
</ClaimsProvider>
<ClaimsProvider>
<DisplayName>One time password technical profiles</DisplayName>
<TechnicalProfiles>
<TechnicalProfile Id="GenerateOtp">
<DisplayName>Generate one time password</DisplayName>
<Protocol Name="Proprietary" Handler="Web.TPEngine.Providers.OneTimePasswordProtocolProvider, Web.TPEngine, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null" />
<Metadata>
<Item Key="Operation">GenerateCode</Item>
<Item Key="CodeExpirationInSeconds">1200</Item>
<Item Key="CodeLength">6</Item>
<Item Key="CharacterSet">0-9</Item>
<Item Key="ReuseSameCode">true</Item>
<Item Key="MaxNumAttempts">5</Item>
</Metadata>
<InputClaims>
<InputClaim ClaimTypeReferenceId="email" PartnerClaimType="identifier" />
</InputClaims>
<OutputClaims>
<OutputClaim ClaimTypeReferenceId="otp" PartnerClaimType="otpGenerated" />
</OutputClaims>
</TechnicalProfile>
<TechnicalProfile Id="VerifyOtp">
<DisplayName>Verify one time password</DisplayName>
<Protocol Name="Proprietary" Handler="Web.TPEngine.Providers.OneTimePasswordProtocolProvider, Web.TPEngine, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null" />
<Metadata>
<Item Key="Operation">VerifyCode</Item>
</Metadata>
<InputClaims>
<InputClaim ClaimTypeReferenceId="email" PartnerClaimType="identifier" />
<InputClaim ClaimTypeReferenceId="verificationCode" PartnerClaimType="otpToVerify" />
</InputClaims>
</TechnicalProfile>
</TechnicalProfiles>
</ClaimsProvider>
<ClaimsProvider>
<DisplayName>RestfulProvider</DisplayName>
<TechnicalProfiles>
<TechnicalProfile Id="SendOtp">
<DisplayName>Use SendGrid's email API to send the code the the user</DisplayName>
<Protocol Name="Proprietary" Handler="Web.TPEngine.Providers.RestfulProvider, Web.TPEngine, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null" />
<Metadata>
<Item Key="ServiceUrl">https://api.sendgrid.com/v3/mail/send</Item>
<Item Key="AuthenticationType">Bearer</Item>
<Item Key="SendClaimsIn">Body</Item>
<Item Key="ClaimUsedForRequestPayload">emailRequestBody</Item>
</Metadata>
<CryptographicKeys>
<Key Id="BearerAuthenticationToken" StorageReferenceId="B2C_1A_SendGridSecret" />
</CryptographicKeys>
<InputClaimsTransformations>
<InputClaimsTransformation ReferenceId="GenerateEmailRequestBody" />
</InputClaimsTransformations>
<InputClaims>
<InputClaim ClaimTypeReferenceId="emailRequestBody" />
</InputClaims>
</TechnicalProfile>
</TechnicalProfiles>
</ClaimsProvider>
<ClaimsProvider>
<DisplayName>Local Account</DisplayName>
<TechnicalProfiles>
<TechnicalProfile Id="LocalAccountSignUpWithLogonEmail">
<Metadata>
<!--OTP validation error messages-->
<Item Key="UserMessageIfSessionDoesNotExist">You have exceeded the maximum time allowed.</Item>
<Item Key="UserMessageIfMaxRetryAttempted">You have exceeded the number of retries allowed.</Item>
<Item Key="UserMessageIfInvalidCode">You have entered the wrong code.</Item>
<Item Key="UserMessageIfSessionConflict">Cannot verify the code, please try again later.</Item>
</Metadata>
<DisplayClaims>
<DisplayClaim DisplayControlReferenceId="emailVerificationControl" />
<DisplayClaim ClaimTypeReferenceId="displayName" Required="true" />
<DisplayClaim ClaimTypeReferenceId="givenName" Required="true" />
<DisplayClaim ClaimTypeReferenceId="surName" Required="true" />
<DisplayClaim ClaimTypeReferenceId="newPassword" Required="true" />
<DisplayClaim ClaimTypeReferenceId="reenterPassword" Required="true" />
</DisplayClaims>
</TechnicalProfile>
<TechnicalProfile Id="LocalAccountDiscoveryUsingEmailAddress">
<Metadata>
<!--OTP validation error messages-->
<Item Key="UserMessageIfSessionDoesNotExist">You have exceeded the maximum time allowed.</Item>
<Item Key="UserMessageIfMaxRetryAttempted">You have exceeded the number of retries allowed.</Item>
<Item Key="UserMessageIfInvalidCode">You have entered the wrong code.</Item>
<Item Key="UserMessageIfSessionConflict">Cannot verify the code, please try again later.</Item>
</Metadata>
<DisplayClaims>
<DisplayClaim DisplayControlReferenceId="emailVerificationControl" />
</DisplayClaims>
</TechnicalProfile>
</TechnicalProfiles>
</ClaimsProvider>
</ClaimsProviders>
<!--UserJourneys>
</UserJourneys-->
</TrustFrameworkPolicy>
the is urn:com:microsoft:aad:b2c:elements:contract:selfasserted:2.1.0
which may conflict with the template. I also played around with this section, but no success.