Developer posts and news about this game.
So, it seems there was a good reason for not having a single new hi-score entry in almost a month: the ranking server was updated weeks ago, and score transfer had just stopped working. Problem is fixed now, and the game should have no problem contacting Earth again.
Sorry for taking so long to add such an essential functionality. Problem is, it took me some time to realize many players didn't have (or simply didn't want to use) a Xbox-compatible controller to play the game. So, here it is: WASD or arrow keys: movement / menu navigation Space