Like the scoreboard index page says, the stats are updated every five minutes. You probably didn't wait long enough before checking. If it's not there now, it's possible that your internet connection stalled as the game tried to submit the score.
Yes, your 4680 score was victimized by the bug. Try the temporary patch and it should fix it. We'll be releasing an official patch that also fixes a campaign-related issue and hopefully brings some more competition to the sim soon.