Thank you for reaching out to the PowerSchool Community.
Which program are you having an issue with the access code?
I have shared some articles below that might help you with access codes depending on the program you are using. If you are trying to access a different program, please let us know.
Q&A: Where Can I Find My District Code? (PowerSchool Mobile)
How-to: Sign Up as a Parent (Schoology)
How-to: Create a Family Portal Account (Unified Classroom Behavior Support)