You can enable SSL support in Joomla simply by adding a few lines of code to your main .htaccess file, i.e. the one residing in the public_html directory of your hosting account. If you don't have an .htaccess file, you can simplycreate a new file with cPanel's File Manager.
You can open the .htaccess file with the File Manager in cPanel and add the following lines at the top of the file:
RewriteEngine on
RewriteCond %{SERVER_PORT} !^443$
RewriteRule .* https://%{HTTP_HOST}%{REQUEST_URI} [QSA,R=301,L]
<IfModule !mod_ssl.c>
Redirect permanent / https://www.yourdomainname.com
</IfModule>
where www.yourdomainname.com should be replaced with your actual domain name. This will force every request to your website to go through SSL.
Joomla is a powerful software that is easy to work with once you have the right host to support you. Before you lose any more time with the wrong host, check out the SiteGround Joomla hosting offer.