How do I extend my outdoor kitchen door higher?

If you unhook the gas struts and it has more range of motion in the hinge then the problem is pretty easily solved. Just gotta move the brackets a bit and possibly change the length of the shocks.
If the door will fold all the way up flat against the camper like most storage compartments you may be able to slap a couple latches on the sides similar to other storage doors for a simple solution if you don’t want to re mount or change the shocks.