If you can confirm that you will read and confirm that your game is eligible for submissions to jams we can reinstate your jam submission permissions. But if we get more reports about your account then we will not be so flexible. Jams are an important part of itch.io and we need to make an effort to ensure that people participating are being respectful of the hosts.
The punishment is strict because we have zero tolerance for people who try to spam. It wastes everyone’s time.