Associated domain mapped : meliodus.org

My domain is suppose to show ghost blogging( 1 click app), instead it shows me an page saying :

Please log into your droplet via SSH to configure your Ghost installation.
Ghost on DigitalOcean Documentation

As far as i know all my configurations are ok. I logged into droplet using ssh, changed /etc/nginx/site-default/ghost server_name to meliodus.org

added a new block

server {
    listen 80;
    server_name www.meliodus.org;

    return 301 $scheme://meliodus.org$request_uri;
}

changed my ghost config /var/www/ghost/config.js

production url to meliodus.org

added A record @ pointing to droplet floating ip
added A record www pointing to droplet foating ip

all pages, admin panels etc works fine under the domain meliodus.org.

example : meliodus.org/sample , meliodus.org/author/sample, meliodus.org/ghost works

but meliodus.org page show an error page or you might say wrong page as described above.

I have tried from different computer, cleared all caches etc. Nothing work. Please help me guys.