I have found the source of my problems. It may also help you. Our school web filter client was restricting google apps to only those approved for our domain. Once I removed that restriction, Sketchup was able to load and approve the credentials. You will still run into issues if you haven’t approved pop-ups for the website but that is an easy fix once you gain access through the filter.
Fortunately, I am a tech director as well as a teacher. So I was able to go into the school filter and remove the restriction.
Attached is a screenshot of what my filter setting looked like. Send this info to your tech person and hopefully they can at least temporarily change this (or similar) setting to give you access to the sketchup app again.
