Thank you for providing the screenshot. I am researching this and will follow up with you later on today.
I also cannot see cases that I have submitted. I just submitted my first case in the PowerSchool Community, and received the email confirmation that my case has been successfully created, however, it does not show up under my Case Portal.
Thank you for reaching out for assistance through the Community. I will look into this and follow up with you through direct message once I have more information.