Hi all! Here's a video I recorded showing how to submit your game to Open Jam. It shows how to submit solo or as a team. Hope it helps! Ask questions below if anything is unclear, I'll do my best to answer.
Let's say you decide to submit early as you're happy with your work, and so you upload, set it as public, and submit. But then you go ahead and make some more improvements since you've got the time; can you submit the same game multiple times? Is it just a matter of uploading another file and it'll automatically update the submit page?