So, I made some test.
-I tried to upload the game without the music. Same problem the loading bar goes all the way but the game doesn't start. It's stuck to the loading icons page.
-I tried to upload of the game with the Loader layout ON and the loading bar was way faster to go all the way but the game is still stuck.
-I tried another game exported the same way. And It work perfectly. So I will eliminate any problem with Itch.IO
-I checked the debug mode, and it doesn't show anything.
I precise that the game works in the Construct2 preview on Chrome and with my phone.