My nginx droplet can be visited at ip and domain name

Yes you will have to create a new server block in the config file just to redirect/resolve IP address to domain name Works good now thanks

Much like rewrite you are doing from www.yourname.com to yourname.com, you need to set a redirect from the IP to the domain name. You can use something like:

server {
    listen 80;
    server_name 111.11.111.111;

    return 301 $scheme://yourname.com$request_uri;
}