I found it when I search it, well once I got that issue too when I post my games for previous jam, the issue is because you click "Upload game" on the submit jam games button, and because of that it auto submit to the jam and got bug where your game is not found from that jam.
 fix that issue by remove my games from the previous jam and re submit again by just select the game that I make made for the jam.
But because I found it and the submission jam s over so well you don't need to do what I do for fixing that