You can’t use a G-Suite address to access other consumer grade Google services, you need a consumer Google account. The email service Telus contracted is the corporate level G-Suite product, and only offers mail and calendaring services.
"We are sorry, but you do not have access to YouTube. Please contact your Organization Administrator for access."
So, to be clear for my situation, that means:
I'm dismayed. This sure seems like something that ought to have been flagged in advance. Is there no way to recover the lost access and resources?