Let me show you what happens when the app isn't working and it turns out the problem is the modem.
The Ford dealership kept telling me the issue was with the FordPass app. After months of back and forth, and with only 5 miles left before my warranty expired, I finally convinced them to properly...
The Factory Key Code location to reset the door keypad is under the dash near the driver-side foot pedals. I used my phone to take a picture of it. It is hard to see physically but taking a pic with the flash worked for me.