This is confusing: I don't see any game at that page. But when I try to generate a link for you to submit, itch.io tells me that the game at that URL has already been submitted.
We have no idea what is happening, so we just moved the deadline forward by one day, in case you or other people still want to submit. After all the point is building something, not the competition. @NiceCeramics, please let us know if you still have trouble submitting! Maybe try to unsubmit/resubmit and see if that works.
(The rating deadline will stay the same.)