Nontraditional instruction during Coronavirus pandemic

Hello - Glad that you and your students are ready to put Rush to work! Question: are the Google account credentials the same credentials assigned by your school system for use with the CC licenses? (I have to ask, as some teachers do what they can with limited resources/access.) If so, experiment with logging in with one of the other login options; it's most likely either the "Continue with Adobe" or the "Continue with Google":

I'm guessing that your school district may have some security components in play (as my university does); I have had to, on occasion, run updates, then restart my device before logging back in to make sure I have a solid app connection.

Also, if you/your students have already created projects in your accounts, you might also need to wait for projects to sync to your device. Look for the rotating circle status icon in the top center of the application (between "Your Projects" and the graduation cap icon).

Hope this helps!