Ok the game is working. It's just that I hadn't understood. that I have to click on the loading image.
However, the game does not work in Incognito mode. (I'm using Chrome browser)
error 403 is from Google Cloud Storage.
That's what i see.
And what i see when a click on the link.
I have the same kind of error message without incognito mode.
But this does not seem to interfere with the smooth operation of the game.
Have a good day