Map is suddenly not showing on the web page.

Up until yesterday the map was showing here – http://townhomesofaddison.com/addison-area-schools/

Yesterday I was working in Manage Markers > Info Settings when it just stopped showing up. Now it’s just blank. I’ve tried updating it. Tried deactivating all the plugins without getting it back. Any ideas?

Thank you, Chuck

https://wordpress.org/plugins/google-maps-bank/