This article explains how to combine the email and password fields into a single signup screen using Advanced Customizations for Universal Login (ACUL). It addresses scenarios where a split signup flow appears, presenting the identifier followed by the password on separate screens.

• Advanced Customizations for Universal Login (ACUL)

• Universal Login

• Authentication Profile

The split signup flow occurs because the Authentication Profile in the tenant settings is configured for Identifier First authentication. This configuration mandates a split flow to handle routing logic, such as Home Realm Discovery for Enterprise connections, before requesting a password.

To display both fields on the same screen, the tenant Authentication Profile must be switched to Identifier + Password.

NOTE: If reliance on Enterprise Single Sign-On (SSO) or certain Organization flows exists, Identifier First is mandatory, and the screens cannot be combined.

1. Navigate to Auth0 Dashboard > Authentication > Authentication Profile.

2. Select Identifier + Password.

3. Select Save.

The tenant will now render the signup prompt instead of the identifier-first prompt. The ACUL signup screen class supports capturing both email and password in a single submission.

Related References

• Configure Identifier First Authentication

• ACUL Signup Screen Class Reference

• Signup screen