Appointments appear in Google Calendar as blank appointments (no title or description)

Hi,

I've purchased and installed Appointments+ and it really works great so far! I've set up the Google Calendar integration, following the steps from your guide, which also works perfectly.

The only problem is that every appointment made on my site, appears as a 'blank appointment' on Google Calendar. The event has no title and no description, even though the standard values for 'Event summary' and 'Event description' are still there in my admin panel.

Any idea how I can get this to work properly?

Thanks in advance!!

Xander