Patio Door Question
Well Smitty, this should be a poster about folks that should never ever touch a house or a hammer. The key to this issue is that the door is installed wrong. Looking at your picture showing the bottom, it shows what should be the door lug which is where the door threshold should be, not on the patio. A good tech can come in, pull the vinyl siding back, remove and install the door correctly if there are no header issues. You didn't post what the inside looks like and I'm not sure a pic would help. But to do this correctly, the door needs to be installed right. The door is also installed on top of the drain plane. I'm surprised it doesn't leak when it rains. Vinyl siding is a decoration, not a drain plane.