Greg, looks like you found some bugs. I'll report them to the developer and let you know if they get fixed. I'm just about always on the desktop so I am guilty of overlooking mobile/tablets for tutorials and some testing. It's a big overlook on my part since Android/Apple make up 70% of the site visits! Thanks for uncovering. I've found now using Chrome on android, I don't see my marker at all. Using Firefox on Android I see it, but can't move it to update location. This seems like what you are experiencing Greg. If you have any other details to add, I'll pass them along. If you have access to a desktop, It looks like you can update your location there and it will stay. Then, even though you can't see your own on Chrome when logged in, everyone else should be able to. I've tested this by logging out. Seems like it's not perfect, but maybe a decent solution. Hopefully the developer will find it worthwhile to fix the bugs. I know they are still putting out updates for it.