I don't find hyperlink on button

After implementing the plugin and setting the options as given in guidelines I get to see the button but hyperlink on the button is missing.

I am using free version, hope hyperlink is suppose to work in free version of plugin,
here is the code that I see for my Product Enquiry button

<span class=”wc_email_inquiry_button_container”>Product Enquiry</span>

http://wordpress.org/extend/plugins/woocommerce-email-inquiry-cart-options/