Ultimate Zoom Earth Kit: Map browser problems

Good day,

Anyone who knows what to do when the mapbrowser.html is not working properly?
I followed all the steps in the tutorial on how to instal everything.
But when I use the Map Browser.html I get a pop up on the map and it is covered in the text “for development purpose only”

I first thought this wouldn’t be a problem when generating the map in AE, but it also effected it in AE.

If anyone has the solution, please let me know!