Which device and android version are you on? do you get any error message?
There are 4 community members apart from me that have reported it working so far.
Make sure:
Username > 8 characters
Password > 8 characters
PIN > 3 digits
I have a sch-r820 model android and it runs gingerbread 2.3.6.
I did everything right as far as username/password etc.
Just doesn't get past the login screen.
My android is problematic but I usually don't have trouble with software.