I have tried creating a new user account, but it says there is already an application with my identifying information and directs me to try to recover my password. However, every email that I try doesn't work.
You would need to navigate to Job listings> I forgot my username or password> enter the email and submit. You would first want to verify if you are using the correct email address associated with your account and check your spam folders also to see if the recovery link was sent.
If you still do not receive the link, I recommend you work with the PowerSchool Support team through a case and have them assist you with the recovery of your account.
You can reach out to them by clicking on this link.