I downloaded Clo3D (cracked) but it's not working when I'm online.

I'm not a Fashion student, but I want to learn fashion designer on my own. So I downloaded Clo3D and whenever I boot it it asks for some password and login ID (which I don't have) unless on offline. I've seen someone using Clo3D while they were online so I know it's some issue. Can anyone help me with this and tell me if Marvelous Designer has the same issue? Also it'd great if you could help me with some tutorials or classes? Thanks.