The starter version provides a full screen display caldendar : Bootstrap calendar.
The premium version provides two full screen display caldendars:
The zoom level of map can be calculated in a wrong manner at the display of several events in the Events menu link.
It's due to that you haven't configured the coordinates of your venues as Google Maps compute the zoom level based on these information.
In order to configure the coordinates, goto the AllEvents component >> Allevents >> Venues >> Update the missing coordinates in your venues.