Osclass Email Setup (Apache Module mod_ssl is not loaded)

Hello, I’m new to Osclass. I don’t know why email is not sending from my osclass website. I have tried all the available tutorial I came across online. Both Gmail & Custom Setup.
There is this warning in the Mail Server setup in the admin panel ( Apache Module mod_ssl is not loaded), I don’t know if that’s the cause.

SSL is working on my site
mod_ssl is loaded when I run “apachectl -M”
Webmail is sending emails correctly
Wordpress & Other scripts are sending emails correctly

I don’t know exactly what’s wrong with the Osclass installation.

Please, any assistance will be highly appreciated.

Note: I’m using Litespeed Server, Centos07, PHP 7.3