XR15 PAIRING to INSIGNIA TV

Just got a 32" INSIGNIA Fire TV/F20 series from Best Buy - and trying to pair my XR15 remote to it for on/off/volume.  Have a wireless X1 box.

Pressed Xfinity/Mute - but Insignia doesn't show up as TV.

Tried Xfinity/Info and entered 3 digit code - just hangs there (even hit OK)

Went online and found about 20 codes for INSIGNIA.  What's weird is that with some of the codes, the green lite flashes twice - but still won't control on/off/volume.

Anyone successful finding the right code for these new Fire TV models?