A comment from the article How to use our Community:
How do I gain access for my district to submit a help ticket for Smartfind Express? I can access the community but get the message I do not have access. Please add me to the community for Smartfind Express.
We are happy to help you with access to the resources in PowerSchool Community. We will follow up with you through the case in order to protect your privacy.
You can learn more about the error message you are receiving in the article linked below.