Newsletter Builder: Creating Cron Job

I recently installed the Newsletter Builder and am using CMS V 2.17 on a clients website.

I have attempted multiple times to go to the background mailer link to get the instructions for setting up a Cron Job, but every time I click on the link, I get a message that I have to be logged in as ADMIN to run this script from the web.  Then, I have to re-log into the CMS again.

I have confirmed that I am ADMIN on all levels, with Editor access to everything.  I have confirmed that I am not only logging sent emails.

Can you provide some assistance so that I can get this functioning for my client ASAP.

Thank you.