Garage door squeaks when lowering
Check the door alignment side to side(rollers rubbing on door track), check that the door is not rubbing on the trim in front of the door edges. Lubricate rollers, hinges.....everything that moves. I assume you lubricated the opener track with the grease supplied??
Check the door in manual mode, look for spots that catch or hang up, and look for those squeaks. The door should operate smoothly. At mid travel, it should stay if you let go. If it does not stay at mid travel, spring tension needs to be adjusted.