Content author cannot receive email notification

Hi

I use the 1.7.3 ver of Komment on J! 3.2.1
I have set up Komento to send email notifications both to Super Users and Content authors on new and pending comments as well as replies0
I have entered also a cron job using your example.

The problem is that the surer users receive the email notification but the Content authors not.

The scenario is like this:
A guest user submits a comment to a J! article giving his email address.
The Super User receives the email notification to moderate the pending comment and approve or disapprove.
The guest user doesn't receive anything as it should??

Other questions is:
The email is sent every x minutes according to the cron job?
The cron jobs is obligatory for sending emails from Komento?

Thanks