SOLVED (the SSO part)
I had to launch DMT for the demo DB, the click settings (the gear in the lower right) and uncheck SSO. Then launching it for my live company, it stops and asks for username and pw, and allows me to select my DB. It was defaulting to one named "GOLDEN". And even after selecting mine in the Environment drop down, it would look for the URL "RL101400connect" (the URL for for the "Golden" environment/app).