Leisure dual fuel range faulty door

Hoping for some advice. The door to the fan assisted door to my Leisure range cooker does not close tight. I can’t work out it this is something to do with the hinges, catches or something else. It may be both.

It’s a few years old and works fine so keen to replace the parts, but wonder if any advice on what are the likely problems. The door seems to drop a bit, but also doesn’t ‘catch’ when closed. I feel it’s a few things wrong.

Any advise?
Thanks,
Daniel