Red map icon not showing on Google map

I'm having a problem getting the red map icon to show up on my Google map on my contact form.

I'm using the following code (a few things redacted for privacy)...

<script src="js/functions.js"></script>

<script src="https://maps.google.com/maps/api/js?key=I have a current API key"></script>
<script src="js/jquery.gmap.js"></script>

<script>

	jQuery('#google-map').gMap({ 

		latitude: xx.xxxxxx,
		longitude: -xxx.xxxxx,
		maptype: 'ROADMAP',
		zoom: 15,
		markers: [
			{
				address: "USA",
                html: "USA",
				icon: {
					image: "img/map-icon-red.png",
					iconsize: [32, 39],
					iconanchor: [13,39]
				}
			}
		],
		doubleclickzoom: false,
		controls: {
			panControl: true,
			zoomControl: true,
			mapTypeControl: true,
			scaleControl: false,
			streetViewControl: false,
			overviewMapControl: false
		}
	});

</script>

Thanks for any help you can provide...

The url is: https://sonomacertifiedbuilders.com/contact-us

thanks...