Outside kitchen door not covered under warenty

[Ammcgill]

We have a 2018 sprinter fks we bought last November. The outside kitchen door is warped and has issues closing. We took it back to where we bought it and they have sent multiple pictures and emails to keystone trying to get it covered. Keystone is declining saying that it is not a manufacturing problem and that we have almost had it a year so it is not covered. I'm sorry but if it is not a year its not a year! Anyone else have this issue?