Then I tried increasing the height of your antenna. Usually, the 2Edge changes to 1Edge and then finally LOS. In your case it stayed at 2Edge for a long time, but the NM improved to a positive value:
26 ft 2Edge NM -5.3 dB
50 ft 2Edge NM -2.8 dB
75 ft 2Edge NM +0.1 dB
100 ft 2Edge NM +3.3 dB
150 ft 2Edge NM +10.8 dB
200 ft 1Edge NM +16.8 dB
300 ft 1Edge NM +19.6 dB
350 ft LOS NM +43.2 dB
I then generated an elevation profile between the WFXT transmitter and your location:
As in the previous profile, the transmitter is at the left end and your location is at the right. It's obvious why the report stays at 2Edge when raising the antenna.
After looking at the elevation profile, using the tilt feature of the 91xg to tilt it up might help at your location because of the obstructions in the signal path.