Gah! I very carefully turned it on in the first server, then forgot on the second one. :-(
Now, with the service on, I see badges as expected.
It might be useful, however, to put something in the server log if either service is invoked without activation (assuming that's possible on your end).
Also, I set my quality gate to fail on bugs > 0, but the bugs badge I get back is grey whether or not the bugs measure is causing me to fail the quality gate. I recognize that this is not first-version functionality, so I guess I'm making a feature request. :-)
Ann