Thanks for the help Valdhor.
I did all the changes you said.
My Piwik instalation is in the same level as my code file too, in a Piwik directory.
I also changed the site ID, once mine is 1 too.
And then I changed the token_auth from anonymous to my own.
And after all this, I got the follow erro messages:
Warning: require_once(/core/bootstrap.php): failed to open stream: No such file or directory in /home/u340084269/public_html/piwik/index.php on line 21
Fatal error: require_once(): Failed opening required ‘/core/bootstrap.php’ (include_path=’.:/opt/php-5.5/pear’) in /home/u340084269/public_html/piwik/index.php on line 21