Cannot change the from email address is subscribe by email plugin

According to the usage documents for this plugin, I should be able to change/set the "Notification from email" but I this doesn't show for me at all. I need to change it because it is currently incorrect.
My wordpress install is a multisite setup and I have the most recent version of the "Suscribe by Email" plugin installed.

Any ideas how I can change this or where it's pulling this email from?

The from email in the email looks like this:
no-reply@jjhudson2
which isn't even a vaild email, plus jjhudson2 is part of the site URL of a completely different website on my multisite...

Thanks!