Commented Unassigned: Password not valid [11]

Good morning,
I'm using this module in a DNN 7.3.4 version.
I tried to import some user and I flagged the "send email option" and "geenrate random password"; the system sends password that aren't working in some users.

I tried to import 6 users and i received 2 valid passwords and 4 not valid passwords.

Thanks in advance for support,
best regards
Comments: May you send us email to support@fordnn.com, so we can schedule a meeting?