Unable to connect to website

I’ve put in the necessary information, however I’m getting “An error occurred”. The url used is: https://www.leapfrogcomputers.com/piwik

I don’t know if other plugins are causing an issue, so let me list what I’m using:
bbPress
Easy Flash Embed
MailChimp
W3 Total Cache
WooCommerce
WooCommerce Authorize.net DPM Gateway
WooCommerce Tab Manager
WooCommerce Video Product Tab
WeeThemes Updater
WordPress SEO

Thank you for your assistance.

https://www.ads-software.com/extend/plugins/wp-piwik/