Not sure what I'm doing wrong.  I'm adding the map and hitting the upload button but it never seems to save it.

Best guess, check your file size. It could be too large to upload.

You might also need to force a page refresh after uploading (exactly how you do that varies by browser) to make sure your browser isn't just displaying a cached copy of the older version.

The file is the right type and small enough...tried the refreshing too.  Would the browser type matter? Or device?  Haven't had acces to my computer today so was trying to upload from my tablet.

The browser and device shouldn't make any difference, except... did you log out on the computer?  Being logged in from two different devices at the same time can sometimes mess things up.

Tried logging out of everything and retrying but still no luck.  Finally got onto my computer and bam...worked just fine.  Guess my tablet didn't like trying to do that.