We have lodged multiple support cases on the support forum and still we are waiting for basic functionality to be fixed.
Dates and times have been problematic for our timezone from day 1. iCal export does not work properly. Dispalying upcoming events shows events from the past, and so on.
Before purchasing this extension you need to make an informed decision, look at the number of currently unsolved issues in the support forum and also look how far back the unsolved issues go. Then make up your mind.