Multisite not working

Hi

I’m currently using WP 3.9.1 version on my website, http://www.hopeislandphysio.com.au

The problem i’m facing is that another site i have created (www.hopeislandphysio.com.au/jp/)is supposed to be linked to the main wesite but is not. When you click on this, the page pops up with twitter, facebook, and other icons and nothing else.

I can click on the link from the main website as an admin, but if i try without logging on as a admin, it does not work.

on wp-config.php file:

define('MULTISITE', true);
define('SUBDOMAIN_INSTALL', false);
define('DOMAIN_CURRENT_SITE', 'www.hopeislandphysio.com.au');
define('PATH_CURRENT_SITE', '/');
define('SITE_ID_CURRENT_SITE', 1);
define('BLOG_ID_CURRENT_SITE', 1);

on .htaccess file

RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]

# add a trailing slash to /wp-admin
RewriteRule ^([_0-9a-zA-Z-]+/)?wp-admin$ $1wp-admin/ [R=301,L]

RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^ - [L]
RewriteRule ^([_0-9a-zA-Z-]+/)?(wp-(content|admin|includes).*) $2 [L]
RewriteRule ^([_0-9a-zA-Z-]+/)?(.*\.php)$ $2 [L]
RewriteRule . index.php [L]

I can see that on https://www.whatsmydns.net/#A/hopeislandphysio.com.au/jp,
DNS is not set up whereas the main page is. https://www.whatsmydns.net/#A/hopeislandphysio.com.au

please help me to fix this problem. Greatly appreciate your help. ^^