I have set the app up for everyone in the district. We are using Google to deploy the app. We are a K-12 school district and our domain is holmen.k12.wi.us for staff and students.holmen.k12.wi.us for students.
Thanks for the @ to get my attention. I just verified everything from your post @armada so you are all set to go. Let me know if you are still seeing the error or not. If you are, please get a screenshot of the entire window it is in with developer mode enabled and the console tab open. Hopefully that will not be needed though.
I hope you and your students enjoy SketchUp as much as I do!