Oh, and one more thing.
It seems that you have already uploaded the game to your itch.io account. In such case, all you have to do is,
- Tap the Submit your project button on the top of our jam page, then,
- Choose the game you want to submit under the Existing game section on the following screen, fill in the information, and click on the Submit button.
I hope this helps. Again, if the above does not work, or you need any assistance, please let us know anytime.
Thank you!