I see an alert about my browser not being supported instead of the map

The structure summary page will show your structure's location on a map if the easting and northing coordinates have been provided.
You might see a warning : You are using a browser that is not supported by Google Maps
This warning displays because Google have discontinued support of Internet Explorer 8 (IE8) for the Google Maps technology used for that particular map.
You will need to make use of an alternate browser or have Internet Explorer updated to a later version.