I have a problem with a firebase and leaderboard

I completely base myself on this project to make my leaderboard, I have copied exactly the same as the tutorial and I have changed the firebase data, but in my project it does not work, when I load the user from the project I base myself on, I can see it in my project, but I cannot upload users it does not upload them.

the project on which I am based;
https://www.patreon.com/posts/gdevelop-online-54784180?utm_medium=clipboard_copy&utm_source=copy_to_clipboard&utm_campaign=postshare
my proyect: