2019 Ford F-350 SD electrical system problems

2019 f-350 with 8' bed and approx 1000 miles. 1st occurrence: departed a campground towing a travel trailer (after doing 3 walk-around safety check prior to departing). Drove 10 miles to nearest gas station before getting on the highway where I discovered the tailgate was down and crushed by the travel trailer. Thinking back through my series of events; I was on level ground and did not reach down to disengage the parking brake below the gate release, I had a ground guide back me up out of my spot who confirmed…

While towing our fifth wheel camper on two separate occasions, the tailgate of our 2019 ford f-350 dually opened randomly while in transit. Without knowing the tailgate was down, it caused damage to the front of our fifth wheel when making turns. This occurred on two different highways but since we don't know when it lowered, we don't know the exact highway conditions at the time. Rain was not a factor. So far, it has only opened when the truck was connected to our fifth wheel.