Issue with home charging Ford

Just bought a new home and installed a 240v outlet(ev rated), 6 gauge wire, 50 amp 2 pole breaker. Haven’t the weirdest issue. My Mustang Mach-E charges at 3.5kW, should be running at at least 7kW. When I plug in my 24 ford lightning it won’t charge past 1.4kW. It’s like stuck on level 1 charging. I have used both ford mobile chargers that came with each vehicle and same issue. Just took it to the dealer for service and they couldn’t spot any issue. Anyone run into this or know of a workaround?