A Unity ID allows you to buy and/or subscribe to Unity products and services, shop in the Asset Store and participate
in the Unity community.
This is frustrating, to say the least. At this point, I could have learned more starting from scratch instead of trying to get this "Beginner"...
Thanks NPadrutt, that was the problem! I still had it in its subfolder adjacent to the cert.
Wish they'd just spell that out in the setup doc.