To enable correct usage for HTTPS: You will need to make the following edit to your .htaccess file... cPanel/file/manager/.htaccess.
# 9. If you only want to allow HTTPS, uncomment the RewriteCond and RewriteRule lines below.
# -----------------------------------------------------------------------------------------------
# uncommment for HTTPS
RewriteCond %{HTTPS} off
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]
# END UNCOMMENT.