Well, I have tried everything I know to do and I cannot find any way to add myself to this map.
I can open the map, no problem, and easily see all the other markers added to the map. But I see no way to add my marker.
I thought the problem might be with the way I log into Google, which is via my own domain name. But I also have a gmail account, which I also signed into, still to no avail.
I wonder if anyone else has had this problem and found a way around it...