I see now that if I go in the admin page of site in the FIELDS PROFILE I have the same problem! I have (normal) no name but I have male, 10-10-1996 etc… and I can’ t set any other default value for these fields.
I have today the same problem! isn’t a cookie!
I have the always the name ELIA ROSSI in my REGISTER FORM and other fields es. male, 10-10-1996 (date of birth) etc…
I go with phpmyadmin into SQL and I delete ELIA ROSSI (ID: 0)
now there isn’ t ELIA ROSSI in the register form but I have already male, 10-10-1996 etc…