No channels found
Check the antenna cable, run a fresh TV scan, and confirm the app is using the correct place before adjusting the antenna again.
Some channels are missing
Try one of the alternate transmitters shown in the app, then re-scan the TV. Small direction changes can matter more than expected.
Signal is breaking up
Inspect joins, splitters, and any amplifier. Step away from metal objects while aiming and recheck the direction before making larger changes.
Moved to a new location
Refresh the location, choose the new transmitter, then aim again before rescanning channels on the TV.
Compass or GPS feels unreliable
Move outside, stand clear of the caravan or vehicle, and hold the phone steady. Metal and poor sky view can reduce accuracy.