Harmony 880 With Flirc? Or Harmony Extension?

Looking for basic functions with this inherited Harmony 880. Picked up a Flirc, Ropieee sees the Flirc, Roon has the Extension enabled…
yet, no control at all on the Harmony.
Tried also using the Flirc App & setting Media Keys. All mapped, yet no response on the Rasberry Pi> rebooted numerous times.