Sketchup for Schools Sign-in Error: Google Admin is set up correctly. Please help

Hello! We are a Google district and trying to have Sketchup work with our accounts. Our Google Admin has followed all directions for setting it up as found here. We can install the app on our Chromebooks just fine;

however, we are still receiving the sign-in error (pictured). I have searched the forums and the only difference that I can find between us and other districts is that we have disabled Google Classroom (we use a different LMS). I have seen this as a requirement on a post from 2017. I just want confirmation that this could be the potential reason for our error. Thank you!