Like everyone else I was trying to put the crumb tray in the bottom from inside the oven. None of my food was cooking from bottom so I thought it was defective. The manual should be more detailed so more customers know how to properly set up their oven and not want to return it! Now that I’ve been on this website I have figured out that the crumb tray needs to go in from OUTSIDE the oven. Now it works perfectly. It’s a shame so much food was wasted before I figured this out. That is why I o my rated 1 star. VERY POOR MANUAL INSTRUCTIONS!!!!!