Hello, itchio didn't let me upload my game so I had to create another account, but the time ran out, can I have some minutes just to upload it?
Usually hosts of jams allow this to happen. Let's hope they reach out to you. What I've learned of jams is that you should always upload like atleast 3 hours before deadline, to overcome any possible issues that arise.
The last couple hours of any jam that lasts over 10 hours is meant to be spent playtesting your game through the itch website, seeing that the downloads and everything works and that your game page looks reasonable. I think you should adapt to this scheduling in future. Sorry to hear about your troubles now.
Even if you miss this chance, there are game jams that allow you to polish your original idea more, and remake it into an even better game!
Also, if you learn from a game jam, any jam, you are already a winner in it.
Learning allows you to grow better in game development, which will be good for your future in the long run!