Hi, I prepared a little video for all the people who have problems with submission or submitting a jam game for the first time on itch:

https://www.youtube.com/watch?v=xDsxRN-CtkY

It describes what confusing problems can happen.

The basic way is:

1. Go to the jam page, click “Submit your project”.
2. Click “Upload game”.
3. On the “Create a new project” form you fill in all the data and save.
4. !!! After saving, select Visibility & access - Public, this is crucial! Then save again.
5. Go back to the jam page and click “Submit your project”.
6. Select the project you created in steps 3-4 in “Existing project” dropdown.
7. Click “Submit”

If you you already have a game project on itch you don’t have to go through steps 3-4, just go to 5.

Hope that helps!