Try to add the link given under the buttons directly as a URL on Google.
You have created or edited appointments, but it is not updated in your phone's calendar? We have set the calendar to update every 15 minutes. However, in some circumstances your calendar program may take much longer.
Google sometimes takes up to 24 hours. Google is responsible for this and we can't influence it. Outlook is faster and updates within about 15 minutes.
If you have problems with synchronization, please have a look here.
If it takes longer, please contact us.