Hi @red_mystik,
Welcome to the Auth0 Community!
I understand that you would like to add additional signup fields during sign-up for your application.
Unfortunately, the New Universal Login experience does not support additional sign-up fields. In this situation, I recommend using the Classic Universal Login experience to include additional signup fields for your application.
Please read our How to configure additional signup fields on the Universal Login Page FAQ for a detailed explanation.
I hope this helps!
If you have any further questions, please do not hesitate to reach out.
Thank you.