In order to Auto Level the System must first drop the Nose (front). Sounds like your jacks, including the Landing Jacks are fully retracted. If that's the case, front isn't going anywhere.
I would put it into Manual mode and level it manually, leaving the front jacks on their blocks.
Michelle & Ann
2018 Chevy 3500HD Crew Cab High Country DRW, D/A, 2016 RW39MB, Dual ACs, Auto Level, Auto Sat Dish, Stack W/D, King Sleep #, 17.5" Sailuns w/Disc, MORryde IS & Pin, Comfort Ride Hitch, 5.5 Onan, Res Fridge & Induction Cook Top