You could try to comment out in the index.php the lines where the authentication is made. (Am not at the computer, that is why I cannot copy you the code)
And you could check if the .htaccess and a search.php file are on your server in the correct directory.
If you created the new channel with the actual API AREL and if you use a tutorial package, note that there is an index.php in 2 different directories. Do not confuse them.
Regards,
Christin