First encounter with ISPConfig so I am stuck with a very basic problem: Hosting company activated SSL certificate for a domain and enabled part of the redirect from HTTP to HTTPS: the home page of the website is blank, going to any of the internal pages gives a 404 error (all pages are OK). In ISPConfig control panel I checked the SSL box, but it stays unchecked; I added to .htaccess the directive I use to redirect to HTTPS:
RewriteEngine On
RewriteCond %{HTTPS} off
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI}
It does not work. No Options tab is visible in control panel > Sites where I could add those directives. Hosting company tech support is lazy/overwhelmed, it takes several days to get a vague answer from them.
Any help will be much appreciated!