For my Grumman, I just did about a 45 minute flight in my local area at about 5500'. I know I have great ADS-B coverage from ground stations in my area. I did some standard rate 360 turns (no aerobatics) . Since I was not aplying for a rebate (I already got one), this was fine (no "Rule Airspace"). I got a clean report for the flight from the FAA and I sent a copy of that report with the 337 from my I/A to the FAA. I have about 5 hours now since installing it.
I have heard other people with SkyBeacons or tailBeacons having to go in and do software tweeks to get a passing report. I did not have any issues there.
I have had issues connecting my iPhone to the tailBeacon, it seems to connect intermintently. I called uAvionics about this last week, and they suggested I try putting the iPhone in "Airplane Mode" (disabling celular service). I have not tried that out yet.
Rich