The first field is the password.
The second field is the password again, for verification.
The third field is the contact information.

Everybody I've watched do this has typed the password the first
time and then pressed Enter, causing the open registration
request to be rejected with an error message because the two
password fields didn't match.

The majority of these (dozens of) people were trying to register
Windows clients.

They all got a nasty first impression of ADSM.

Melinda Varian