Thanks for the feedback! Yes, that's how it works) I suggest trying to choose the "Arena" platform and beat everyone with all your might). Or there is a simple great hack =): if you minimize the game when you gain a certain amount of XP, at this time the information should be transferred to the server, that is, your XP will be saved.
I did not have time to work through all the bugs and check that everything works correctly.
This is not the only bug that I found, I only realized after the end of the jam that you can activate all the same type of awards using only one of them, since they all have the same ID, although I was sure they are different, because they are from different tasks) And also in the browser version, when returning to the main menu from the game, some kind of glitch with the camera occurs.