using dev url (IP/~username) with multisite

Main site works fine but can’t access dash of sub sites getting a “The page isn’t redirecting properly” message on the browser.

Got a network setup as sub-directory where main site url would be IP/~username and sub-site I assume would be IP/~username/site-2

dash of sub-sites poining to IP/~username/site-2/wp-admin

Also the sub-site front-end shows default network theme with no css.

this is the multisite definition on wp-content

define('WP_ALLOW_MULTISITE', true);
define('MULTISITE', true);
define('SUBDOMAIN_INSTALL', false);
define('DOMAIN_CURRENT_SITE', '223.27.22.81');
define('PATH_CURRENT_SITE', '/~wwwaccou/');
define('SITE_ID_CURRENT_SITE', 1);
define('BLOG_ID_CURRENT_SITE', 1);
define('WP_DEFAULT_THEME', 'foundation-vanila');

htaccess looks like:

RewriteEngine On
RewriteBase /~wwwaccou/
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).*) home/wwwaccou/public_html/$2 [L]
RewriteRule ^([_0-9a-zA-Z-]+/)?(.*\.php)$ home/wwwaccou/public_html/$2 [L]
RewriteRule . index.php [L]

Would be great to have some directions on how to use IP/~usernames with multisite. Thanks in advance!