Why does https "work" only on the homepage?

Question

opencart

Opencart 2.3

1) I received an SSL certificate from the host (free Let's Encrypt)

2) in .htaccess I wrote:

RewriteEngine On
RewriteCond %{HTTP:X-Forwarded-Proto} !https
RewriteRule (.*) https://%{HTTP_HOST}% {REQUEST_URI } [R=301,L]

3) in config.php
HTTPS
define('HTTPS_SERVER', ' https://site.ru/ ')

4) in admin/config.php
HTTP
define('HTTP_SERVER', ' https://site.ru/admin/ ');
define('HTTP_CATALOG', ' https://site.ru/ ');

HTTPS
define('HTTPS_SERVER', ' https://site.ru/admin/ ');
define('https://site.ru/ ');

5) in the admin panel of the site settings-server clicked "use SSL"

As a result, when I enter the https:// address of the site, then everything is OK - the main page opens, and there is a "lock" in opera and chrome. But the transition to any page - and already instead of the lock the inscription "unreliable", including if I return to the main page back.

The site is new, I haven't done anything with seo yet, if it has anything to

do with it What else is required for https to work?

Answer 1

at least test this:

1. change all links within the site to links without http. The link "http: //docs.google.com" should be changed to "//docs.google.com";
   
2. make sure that all content is not loaded using the http protocol. Link to images like "http: //domain.com" should be changed to //com/image.png;
   
3. check that all third-party modules are loaded not via http, but via https.
   

Answer 2

in the config file, first write https everywhere. Specify redirection in the hosting settings, knock on the hosting technical support - they will fix it