By 'credentials' I assume you're referring to Wordpress credentials. The TD's "status listener" page doesn't need any credentials. It's really just a page that accepts POST data (think of it as a page that reads the results of an HTML form).
There are basically 2 pages that come with the examples: a "listener" page and a "status" page.
The listener page listens for status updates from the TD application. That's all it does. Point your browser at it and you'll get a blank page back, because it doesn't "output" anything. It's just a listener.
The status page displays the status of the tournament.
The trick is storing the status of the tournament somewhere on the server so that the status page can display the current status of the tournament. It's a simple data storage issue. It can be written to a file, or put into a database. The example listener page goes the extremely simple route of writing to a file. The problem is most web servers are configured with security settings that don't allow this. So your options are to either (a) reconfigure security settings to allow the listener page to write to a file; (b) change the listener page to write the status to a file located in a different folder where security is more lax (usually there's a "temp" folder that might allow this); (c) change the listener page to write the status to a database table. For (b) and (c), you would also have to update the status page to read the status from the updated location.
Most hosting services provide access to MySQL for no additional charge. It would be fairly trivial to modify the examples to use the database instead of a file. Let me know if this would be a better solution for you and I can help.