How to create a custom signup/login page

Question:
How do I create a custom login page?

Product:
Wix Editor

What are you trying to achieve:
I have a server code running on my cloud and I want to use it to sign up new users on my site instead of the Wix’s built-in authentication process by adding in a member’s area and a log in bar. I have enabled wix velo and I can send the necessary HTTP requests. However, my problem is that when I am trying to create the form, I cannot label an input field “Password”. It gives me an error as below
image

What have you already tried:
I have tried to add some wix velo code to the existing sign up/login lightboxes but I don’t want two authentication systems in place as it will be a bad UX

In the type dropdown, first select Password then go and try to name it.

If anything, just don’t use the title field. Use a regular text element instead.