Directory Press – Emails Not Being Sent From Directory Press Site

Hi
I cannot get emails from my directory site to be sent to the users.
For Contact Administrator, I go into my site as a regular user, submit a message, but I do not receive it.
Email Alert (for New Submissions) isn’t functioning, and new Membership messages aren’t being received by me the administrator.
I’ve gone through my settings, but I cannot find any settings related to my email, including the server they are sending from.
The new membership messages were working a few days ago, now they are not