Recently, I have created a new droplet. I install LEMP stack on it.

Then I tried to link my server IP address to my domain name.
I setup a virtual host as per instructions here: https://www.digitalocean.com/community/tutorials/how-to-set-up-nginx-virtual-hosts-server-blocks-on-ubuntu-12-04-lts–3

but when I type my domain name in the browser, I am being redirected to the www.dropletopedia.com

Why?

When I type my server IP address (you can try: 104.131.161.63) I am redirected to my home page. However, when I type my domain name (you can also try: arukidasu.ru) I am redirected to dropletopedia.

Could you please help me understand why it happens and what I did wrong?