Sign-In Error at edu.sketchup.com

Hello,
I am an Admin for my school and am trying to access SketchUp before making it open to the “public,” and the Sign In Error showed at the start of this forum is quickly becoming my nemesis. As best I can tell, everything is set up correctly on my end (pop-ups allowed for the site, app is allowed on the domain…), but hard as I try, I am unable to login. I even created myself another email account within the teachers group, hoping that my Admin account was the problem, and nothing seems to work. I submitted the survey mentioned above, and was wondering if anyone had any luck circumventing this issue. Thanks in advance.\