Emineminero on "Main Domain running with Multisite good, subdomain Multisite not"

So to be clear, pt.comunidadcrm.com runs from /public_html/Portuguese ?

Or something like that?

Exactly!

I edited the .htaccess (replace everythiing with the lines:

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).*) PortuguesTest/$2 [L]
RewriteRule ^([_0-9a-zA-Z-]+/)?(.*\.php)$ PortuguesTest/$2 [L]
RewriteRule . index.php [L]