Have tried kick to open. Had that on jeep and loved it. Dealer is working with corporate to find fix since they have two on thei lot that also don’t work.Money. I guess ford doesn't think the juice is worth the squeeze. Apparently people get the feature but dont use it.
Have you tried standing or kicking your foot in different spots by the tailgate. Looking at videos, looks like your have to stand behind the tailgate for like 3 sec before it'll register to open.