I got mine to work on my 08 M3
I used the email address that BMW Assist had for me on file, and the password is your security ID when you call into BMW Assist. I used these two things and the app works perfect on the Iphone. I was able to locate my car and lock and unlock the doors.
The number to call is 1-888-333-6118 option 3 then 3 again
Ask them for the on file Email and like the password dis your security ID.