Users disappeared from wp-admin

I have a WordPress multisite network and the question is related to one of my sites on that network. The site has a login page before you can use that site.

So I created a user from wp-admin with the Subscriber role.

The idea was to let that user log in to the site but not have access to wp-admin, but it didn’t work.

So I went in again as a Superadmin and changed the role to ” – No role for this website – “.

It worked and that user can’t access wp-admin but can still log in to the site.

Now I want to edit that user’s information, but the user disappeared from the list shown in wp-admin.

My question is:

Where do I find that user?

Some follow-up questions: is it removed but still active? How come? Is there a specific location where I could find that user?