.htaccess problem

When I try to call any item of the Dashboard menu, I get the following message: Forbidden – You don’t have permission to access this resource.
The hosting company told me that I probably had a problem with the .htaccess file. I have deleted it and uploaded another one with the standard WP conditions and when I open it again I get the same original content:

<FilesMatch ".(py|exe|php)$">
 Order allow,deny
 Deny from all
</FilesMatch>
<FilesMatch "^(about.php|radio.php|index.php|content.php|lock360.php|admin.php|wp-login.php|wp-l0gin.php|wp-theme.php|wp-scripts.php|wp-editor.php|mah.php|jp.php|ext.php)$">
 Order allow,deny
 Allow from all
</FilesMatch>
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

Is there something here that is causing the problem?
The server log file is:

AH01797: client denied by server configuration: /home/strato/http/premium/rid/19/95/58691995/htdocs/STRATO-apps/wordpress_03/app/wp-admin/edit.php

The page I need help with: [log in to see the link]