Rated 4 out of 5 stars

Too bad it is all in english. It used to be available in dutch.

But its still a great app.

This review is for a previous version of the add-on (1.5.1). 

This was an error in 1.5 and is fixed with 1.5.1. If you invite attendees to events, please wait for 1.5.2 though before upgrading.