Update with interesting test result:
We set up the cloud, on a network that IT admin said was open to the internet.
But neither my Mac nor the CC3 could reach the internet.
CC3 didn´t show up in the cloud, and ID number stayed orange in the CC3 html interface.
Interesting result: After running one playback for a few loops, CC3 froze and needed power cycle to wake up. This happened a few times.
When we turned off Send diagostics and deleted ID number, the freeze problem went away.
Now, idk what the network problem was. Possibly Mac address blocking?