I have a problem with feeds on this plugin.
The widget tell me to check my feed URL, which is https://www.google.com/calendar/feeds/colet.volley%40gmail.com/public/basic and seems to work in my browser.
I don't know how to fix it. Can it be the HTTPS ? But I think Google forbid HTTP now.
I have the last version of the plugin : 0.7.2 with wordpress 3.3.1
Thank's for your help.