Hi Carlos, thanks for playing and leaving your feedback!
Yeah there is something slightly wrong with submitting the scores, i`ve tested it a few times (with different PCs) and it works (generally). Sometimes score will only get added when you go back to the main menu or something like that and look at the leaderboard again. Sometimes you have to submit it twice or something if the Leaderboard was not ready idk.
Sorry would loved to have your score in there!