Some of our lamps have thin, flat bases that are packaged into the underside of the styrofoam. It is covered with an extra layer of cardboard for protection, and can sometimes be missed.
Sometimes the hardware is packed inside crevices. Please make sure to look carefully throughout the packaging, and not to throw any packaging out before double-checking it.
If this helped you, we're so glad! If it didn't, please don't hesitate to reach out to us for support.