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yes, you need to be patient and wait for it.
Put the code on the bottom of your page. It is not supposed to show. You would then after a while get a message from worldmap that you are on the map. On there, you have two links - the author link (which shows all your locations) and the post link which points to your map location for that specific post. You could then copy it and put it on your blog.
It work for me just recently:
https://steemit.com/comments/@thermoplastic/are-there-trolls-on-steemit