Welcome to the forum, Hanne - not much room to get the 2nd screw out, is there.
Right, the two screws for the top pivot and bottom pivot are clearly visible when the door is open - JUST LIKE IT WAS DESIGNED.He should only have to unscrew the two bottom screws and twist it out
Maybe OP will share a picture when the door finally gets removed? And, yes, I've seen those kind also, but less frequently. We've all run into lots of variety over the years!Most of the pin hinges I've worked with are made like this.