I am building a KML file to publish on my website and then use in AGO maps. I know it would be better to upload it as a feature class, but I have my reasons. So, the KML styles look fine, but the pop up is where I am struggling. I read here: KML—Portal for ArcGIS | ArcGIS Enterprise that ExtendedData can go in the pop-up descriptions, but when I add ExtendedData to my Placemarks and nothing shows in the pop-up. Is the only option to make a table of attributes in the description of the Placemark using HTML? I would rather it be dynamic based on the ExtendedData.
Here is a link to the KML: https://www.dps.texas.gov/dem/kml/dev_TXDOTRoadConditionsLines.kml