Help with conflict Zencache, contact form 7 and .htaccess

Hi, I am using Contact Form 7 and when I added Zenfile in my WP I got the message:

HTTP403:
FORBIDDEN - The server understood the request, but is refusing to fulfill it.
(XHR): GET - http://amy-group.com/contact/customer-service?_wpcf7_is_ajax_call=1&_wpcf7=161&_wpcf7_request_ver=1440582663706

when looking for the problem I got in this block at my .htaccess:

# Rules to block suspicious URIs
RewriteCond %{QUERY_STRING} \.\.\/ [NC,OR]
RewriteCond %{QUERY_STRING} ^.*\.(bash|git|hg|log|svn|swp|cvs) [NC,OR]
RewriteCond %{QUERY_STRING} etc/passwd [NC,OR]
RewriteCond %{QUERY_STRING} boot\.ini [NC,OR]
RewriteCond %{QUERY_STRING} ftp\:  [NC,OR]
RewriteCond %{QUERY_STRING} http\:  [NC,OR]
RewriteCond %{QUERY_STRING} https\:  [NC,OR]
RewriteCond %{QUERY_STRING} (\<|%3C).*script.*(\>|%3E) [NC,OR]
RewriteCond %{QUERY_STRING} mosConfig_[a-zA-Z_]{1,21}(=|%3D) [NC,OR]
RewriteCond %{QUERY_STRING} base64_encode.*\(.*\) [NC,OR]
RewriteCond %{QUERY_STRING} ^.*(\[|\]|\(|\)|<|>|ê|"|;|\?|\*|=$).* [NC,OR]
# RewriteCond %{QUERY_STRING} ^.*("|'|<|>|\|{||).* [NC,OR]
RewriteCond %{QUERY_STRING} ^.*(%24&x).* [NC,OR]
RewriteCond %{QUERY_STRING} ^.*(127\.0).* [NC,OR]
RewriteCond %{QUERY_STRING} ^.*(globals|encode|localhost|loopback).* [NC,OR]
RewriteCond %{QUERY_STRING} ^.*(request|concat|insert|union|declare).* [NC]
RewriteCond %{QUERY_STRING} !^loggedout=true
RewriteCond %{QUERY_STRING} !^action=jetpack-sso
RewriteCond %{QUERY_STRING} !^action=rp
RewriteCond %{HTTP_COOKIE} !^.*wordpress_logged_in_.*$
RewriteCond %{HTTP_REFERER} !^http://maps\.googleapis\.com(.*)$
RewriteRule ^(.*)$ - [F]

Can you help me to identify where or what to fix as when I comment this full block so I don’t get any error!!!
Thanks in advance, Gg

https://wordpress.org/plugins/zencache/