If your oven door isn't closing properly, check for any obstructions around the edges of the door that may be blocking it. Look around the springs of the oven to check for debris and obstructions, too. \
Make sure the oven racks are pushed back and not sticking out, as this can impede the door and prevent it from closing. \
If you can't find something preventing the door from closing, you may need to perform a repair such as replacing the hinges. \