redirect - Amazon EC2 instance redirecting to old Public DNS after associating elastic ip

I have an EC2 instance and it was working just fine. Yesterday, I created a new Elastic Ip and associated it to this working instance.

Now, if I type de Elastic ip address in my browser, it redirects to the original public DNS, when it was not associated to the elastic ip.

if I curl my site from the instance itself I get this:

* Rebuilt URL to: 127.0.0.1/
*   Trying 127.0.0.1...
* Connected to 127.0.0.1 (127.0.0.1) port 80 (#0)
> GET / HTTP/1.1
> Host: 127.0.0.1
> User-Agent: curl/7.47.0
> Accept: */*
> 
< HTTP/1.1 302 Found

< Server: nginx/1.10.0 (Ubuntu)
< Date: Mon, 13 Feb 2017 08:27:44 GMT
< Content-Type: text/html; charset=utf-8
< Transfer-Encoding: chunked
< Connection: keep-alive
< Location: http://ec2-35-165-45-84.us-west-2.compute.amazonaws.com/ (This is wrong!)

I'm using NGINX in my website, this is my conf file:

server {
        listen 80 default_server;
        listen [::]:80 default_server;

        # SSL configuration
        #
        # listen 443 ssl default_server;
        # listen [::]:443 ssl default_server;
        #
        # Note: You should disable gzip for SSL traffic.

        # See: https://bugs.debian.org/773332
        #
        # Read up on ssl_ciphers to ensure a secure configuration.
        # See: https://bugs.debian.org/765782
        #
        # Self signed certs generated by the ssl-cert package
        # Don't use them in a production server!
        #
        # include snippets/snakeoil.conf;


        #root /var/www/html;
        root /usr/share/nginx/html/prestashop;

        # Add index.php to the list if you are using PHP
        index index.html index.php index.htm index.nginx-debian.html;

        server_name _;

        # Logs
        access_log /var/log/nginx/access.log;

        error_log /var/log/nginx/error.log;

        location = /robots.txt {
                auth_basic off;
                allow all;
                log_not_found off;
                access_log off;
        }

        # Gzip Settings

        gzip on;
        gzip_disable "msie6";
        gzip_vary on;
        gzip_proxied any;
        gzip_comp_level 1;
        gzip_buffers 16 8k;
        gzip_http_version 1.0;
        gzip_types application/json text/css application/javascript;

        rewrite ^/api/?(.*)$ /webservice/dispatcher.php?url=$1 last;

        rewrite ^/([0-9])(-[_a-zA-Z0-9-]*)?(-[0-9]+)?/.+.jpg$ /img/p/$1/$1$2$3.jpg last;
        rewrite ^/([0-9])([0-9])(-[_a-zA-Z0-9-]*)?(-[0-9]+)?/.+.jpg$ /img/p/$1/$2/$1$2$3$4.jpg last;
        rewrite ^/([0-9])([0-9])([0-9])(-[_a-zA-Z0-9-]*)?(-[0-9]+)?/.+.jpg$ /img/p/$1/$2/$3/$1$2$3$4$5.jpg last;
        rewrite ^/([0-9])([0-9])([0-9])([0-9])(-[_a-zA-Z0-9-]*)?(-[0-9]+)?/.+.jpg$ /img/p/$1/$2/$3/$4/$1$2$3$4$5$6.jpg last;
        rewrite ^/([0-9])([0-9])([0-9])([0-9])([0-9])(-[_a-zA-Z0-9-]*)?(-[0-9]+)?/.+.jpg$ /img/p/$1/$2/$3/$4/$5/$1$2$3$4$5$6$7.jpg last;
        rewrite ^/([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])(-[_a-zA-Z0-9-]*)?(-[0-9]+)?/.+.jpg$ /img/p/$1/$2/$3/$4/$5/$6/$1$2$3$4$5$6$7$8.jpg last;
        rewrite ^/([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])(-[_a-zA-Z0-9-]*)?(-[0-9]+)?/.+.jpg$ /img/p/$1/$2/$3/$4/$5/$6/$7/$1$2$3$4$5$6$7$8$9.jpg last;
        rewrite ^/([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])(-[_a-zA-Z0-9-]*)?(-[0-9]+)?/.+.jpg$ /img/p/$1/$2/$3/$4/$5/$6/$7/$8/$1$2$3$4$5$6$7$8$9$10.jpg last;
        rewrite ^/c/([0-9]+)(-[.*_a-zA-Z0-9-]*)(-[0-9]+)?/.+.jpg$ /img/c/$1$2$3.jpg last;
        rewrite ^/c/([a-zA-Z_-]+)(-[0-9]+)?/.+.jpg$ /img/c/$1$2.jpg last;

        rewrite ^/images_ie/?([^/]+).(jpe?g|png|gif)$ /js/jquery/plugins/fancybox/images/$1.$2 last;
        rewrite ^/order$ /index.php?controller=order last;

        # Admin URL   
        location /admin-dev/ {                           #Change this to your admin folder
                if (!-e $request_filename) {
                        rewrite ^/.*$ /admin-dev/index.php last; #Change this to your admin folder
                }
        }


        location / {
                if (!-e $request_filename) {
                        rewrite ^/.*$ /index.php last;
                }
        }

#       location / {
#               # First attempt to serve request as file, then
#               # as directory, then fall back to displaying a 404.
#               try_files $uri $uri/ =404;

#       }

        # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
        #
        location ~ \.php$ {
                include snippets/fastcgi-php.conf;

                # With php7.0-cgi alone:
                # fastcgi_pass 127.0.0.1:9000;
                # With php7.0-fpm:

                fastcgi_pass unix:/run/php/php7.0-fpm.sock;
        }

        client_max_body_size 10M;

        # deny access to .htaccess files, if Apache's document root
        # concurs with nginx's one
        #
        #location ~ /\.ht {
        #       deny all;

        #}
}