Registration without form ?

I think what you’re saying is that you created a page and set it as your registration page, but you’re not seeing a registration form on it?

If so, did you add the [wpmem_form register] shortcode to the page? That’s what displays the form.

See:
https://rocketgeek.com/plugins/wp-members/docs/plugin-settings/options/#pages
https://rocketgeek.com/plugins/wp-members/docs/shortcodes/form/#register