nguyenbanglaixe on "[Plugin: Wordfence Security] Can I use Wordfence to block visitors referred from hitleap.com?"

Can anyone told me how to use Wordfence to block visitors referred from hitleap.com?
Now, my bounce rate is 100% :(
I'm new bie, and I can not use this code in .htaccess file:

# block visitors referred from hitleap.com
RewriteEngine on
RewriteCond %{HTTP_REFERER} hitleap\.com [NC]
RewriteRule .* - [F]

thank you.

https://wordpress.org/plugins/wordfence/