Integrating Google Maps API on a wordpress website

Hi, Just having a problem with integrating Google Maps API on a wordpress website. We are building a wordpress directory website. We are using Mylisting wordpress theme. After creating the Maps API and adding the key to the theme, still, the map is not working as it should be. Theme Demo :[login to view URL] Notice how when you type in a location in the search recognises and autocomplete. This is what we would like to achieve. Our website: [login to view URL] When searching for or a location or adding an address to a new listing, it doesn't work as the demo site. Let us know if that is Something you can help with and we'll share login details for both our website and the Google account. Many thanks, Adham