Website shows Nginx Welcome page

I just installed EE on my DigitalOcean Droplet. My domain is wiseturban [dot] com

when i load the website in browser it shows Nginx welcome page rather than wordpress blog page as expected.

If i visit a page made in wordpress its URL structure is :

website does not open with prefix . it opens without www prefix.

Will I need to fix DNS records in digitalocean backend ?