Now after creating the server i had 2 sites, the default site and mysite.com then i link my Name provider to my Linode public IP and when trying to acces that IP redirect me to the default site.
Then I deleted the default site and tried to acces to mysite.com but on the site just appeared "404 Not Found NGINX " and the address bar was pointing to my IP an not to my domain name.
Do I need an extra config after deleting the default site?
Assuming that you used your actual domain and have set the A record correctly in the DNS...
I don't know what is causing your IP to be displayed but the Not Found error could be that you haven't actually deployed your App yet. If you have then it might be better to just delete the site in Forge and start over.
Well I just did a fresh installation. And I deploy my app on the default site. So I can access thru www.mysite.com but in the address bar change to the IP address of Linode. How can I change this?
Pd mysite.com it's an example site not the real one
I would recommend that you delete the default site in Forge before adding anything, otherwise you'll hit problems if you need to add other sites to the same server.