Appointment google calendar integration

Hi, nice day~

I'm testing google calendar integraion
here http://cniserver1.cafe24.com/protan1

And I can't share my appointment with google calendar

I set up the Appointment and google calendar as The video explained.

But it's not working. :slight_frown:

I try to testing from "Test Connection",but there is nothing.
Any alert isn't appeared... :slight_frown:

How can I solve this problem??

Cnisystem