Login on DF 2.0?

Hi all,
I have used DF since its 1.x days, and the familiar login method isn’t working now.
When I navigate to API Docs>User>POST user/session and fill out the login object with the same credentials I just used to login to the admin account, I get a 401 error back. I’ve verified multiple times that the password/username combo is correct, I’ve even tried other accounts, etc, and have consistently received the same error.
Do I need to do something else to actually make the standard login procedure work?

In 2.0 users and admins are separated as different objects.
Users log in via user/session
Admins log in via system/admin/session

That did it, thank you