I don't understand your response. The point of a game jam is to start creating the game when the game jam begins and then submit it before it ends. A project you started earlier than the beginning of the game jam is not permitted to be your submission.
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If you submit something you started before the game jam starts, then yes, it will be rejected. The jam starts in a couple of days and gives you a good amount of time to come up with something new and small and submit it. Think of what you know well, as far as development and design goes, and then start a small game with that when the jam begins a couple of days from now. If you do that and submit it by the time the jam ends, I'll play the game.
The purpose and spirit of a jam is to create something inside of the time the jam begins and ends. A jam is not for submitting existing completed projects, or projects that were started at any point before the beginning of the jam. A game created for a jam can then be further developed into a larger, more complete game after it ends. Festivals and other types of events are often for projects started before the event begins (like Steam NextFest) - maybe you were thinking this jam was more like that.
I hope you submit something new for the jam. Like I said, if you do, I'll play it. Take it easy.