Good Day! Thank you for posting in the Community. I am sorry to hear that you are facing an inconvenience.
Have you tried to uninstall and then re-install the app? Also, you can try to enter the server address instead of the district code and see if it helps. If this does not help you then we recommend reaching out to the administrators in your school district who should be able to assist you further with this or can connect with the PowerSchool Support team to troubleshoot this issue further.
This is an ongoing issue with the iOS mobile app and our development team is working to fix the bug. We recommend that you report this issue to your district. Our PowerSchool Support team will need to review their server information and update them when the fix is available.