WebDAV access and permissions

I can’t get access to webdav folder with messages 403: “You don’t have permission to access /sync on this server” or “Access denied”

I try to configure WebDAV by using this manual - https://www.digitalocean.com/community/tutorials/how-to-configure-webdav-access-with-apache-on-ubuntu-12-04

Here is my 000-default.conf

<VirtualHost *:80>
        ServerAdmin webmaster@localhost
        DocumentRoot /var/www/webdav

        ErrorLog ${APACHE_LOG_DIR}/error.log
        CustomLog ${APACHE_LOG_DIR}/access.log combine

        <Directory /var/www/webdav/>
        Options Indexes MultiViews
        AllowOverride None
        Order allow,deny
        allow from all
        </Directory>

        Alias /sync /var/www/webdav/

        <Location /webdav>
        Dav on
        AuthType Digest
        AuthName "webdav"
        AuthUserFile /etc/apache2/webdav.password
        Require valid-user
        </Location>
</VirtualHost>

Permission for 000-default.conf - -rw-r–r-- 1 root root 1629 Aug 24 15:04 /etc/apache2/sites-available/000-default.conf

Permission for webdav.password - -rw-rw---- 1 www-data userID 48 Aug 24 14:44 webdav.password

Permission for webdav alias - lrwxrwxrwx 1 www-data userID 16 Aug 24 14:10 webdav -> /home/userID/webdav

Permission for webdav folder drw-rw-r-- 2 www-data konst 4096 Aug 24 14:10 sync

Does anyone have ideas?

My droplet is Ubuntu 14.04 x32

Many thanks in advance!