Ok first of all these doors are Crazy bugged. Sometimes they open for no reason and wont close. Why do they split in half sometimes? Iron doors are way too hard to figure out. These problems need to be fixed. I say call in a expert to fix the bugs in the game. With all that money notch is making now that stuff should be getting fixed soon I hope. $$$$$$$$$
I think you want this forum. For now, your best bet is to just keep opening and closing the door till you can get through.