Google Map: Over Query Limit

I need show more than 10 listings in the google map, because I sell the fetured listing that must to be showed in the home page as google map.

Before the upgrade everthing was fine, I set up 100 listings in the google map and I didn´t have a message error. Right now I have the error message Over Query Limit after 10 listings.

I need to fix this to have more listings in the google map on the home page because everthing that have fetured listing want their listing in the home google map.

Mark could you please help me with this?
Does I have to change the google API? If that is the case how I can change it?(where is the file)