Ground unit not connecting to Air unit

hardware:
raspberry pi 3A+ (air)
raspberry pi 4B (ground)
ASUS AC56 and AC56R
raspberry pi camera OV5647

software (openhd imageWriter):
air:
image name:OpenHD-image-pi-bullseye-configurable-release-06-26-2024-00-28-57
boot type:air
cameraov5647
bind phrase:ABC12345

ground:
image name:OpenHD-image-pi-bullseye-configurable-release-06-26-2024-00-28-57
boot type:ground
bind phrase:ABC12345