I’m not sure whether people on this forum would be able to tell you what is going wrong. You may wish to revert the HTTP to HTTPS redirect so that you can investigate the issue. You can do this by locating and then removing the redirect from your /etc/httpd/ directory.
Initially I discovered 5 references to href="http:// in the source… now it looks like only the “Powered By” credit refers to http:// (sorry for the chatter)
I made a restore from a server image, so verified if the http works normally, after that I install the letsencrypt and the certificates, www and non www, I’ve followed the tutorial to install SSL in the CMS, but when certificates installation had finished I didn’t choosed the option to make redirect from http to https. I searched and I made it work parcially. Now is redirecting http www and non www to https non www. The problem is in a specify directory, the https is working, but not the redirect from http to https and from www to non www.
My .htacessis now:
RewriteEngine On
RewriteBase /
RewriteCond %{HTTP_HOST} ^www.(.*) [NC]
RewriteRule ^(.*) https://%1/$1 [R=301,L]