Are you hosted? I am, and I made my request here: https://support.powerschool.com/case/powerschoolSaas.action
Use the drop down to select "Hosting Upgrade".
It wasn't a "that day" kind of thing. It was done in about 3 days.
We strive to protect the user's personal information and to make sure that no private information is shared on the PowerSchool community, I will follow up with you over a private message to assist you further about your community access.