I used certbot to call cloudflare's api and installed let's encrypt's SSL certificate for my website. my vps install centos7 and apache ,my website is wordpress I use cloudflare's strict(full) mode, my website can be opened, but there is no lock pattern in front of the domain name, and it shows "not secure" I wrote these in the apache file /etc/httpd/conf/httpd.conf:
<VirtualHost *:443>
ServerAdmin admin@mydomain.com
DocumentRoot /var/www/html
ServerName www.mydomain.com
ServerAlias mydomain.com
ErrorLog /var/log/httpd/mydomain.com-error.log
CustomLog /var/log/httpd/mydomain.com-acces.log common
SSLProtocol all -SSLv2 -SSLv3
SSLCipherSuite HIGH:!RC4:!MD5:!aNULL:!eNULL:!NULL:!DH:!EDH:!EXP:+MEDIUM
SSLEngine on
SSLCertificateFile /etc/letsencrypt/live/mydomain.com/cert.pem
SSLCertificateKeyFile /etc/letsencrypt/live/mydomain.com/privkey.pem
SSLCertificateChainFile /etc/letsencrypt/live/mydomain.com/fullchain.pem
</VirtualHost>
but nothing changed what should I do now?