Just installed the Trial. When generating a report this error comes up: Something went wrong: Cannot call method "getRange" of null

Hi, Anytime I try to create a new class or run a report, I get an error message saying the add-on needs my permission to run. Then, when I click through the prompts, I get a messages that says, "Error 400: invalid_request - Account restricted" All the other teachers using it at my school get the same messages. The tech guy added the "add-on" to our accounts as well to try and give us the permission... Still get the error message. Does anyone know how to solve this?

Why I add a new row for a student who was just added to my classroom, nothing get formulated. I need to have the color of where they fall, overall percentage and grades automatically updated. What can I do about this, as we use this as a main grade book for a modified curriculum that I teach.

This is popping up instead of the level for the student. Something I am missing?