The following problems were found:

• You cannot add "UFO 4000 Mini Drone for Kids - LED Remote Control Drone, Small RC Quadcopter for Beginners, 2.4Ghz Remote Control, 360 Flips, 2 Speed UFO Flying Toy for Kids, 2 RC Toy Batteries" to the cart because the product is out of stock.
• You cannot add "Drone with 1080P Camera - Foldable Remote Control Quadcopter with Voice Gesture Control, 3D Flip, One Key Start, Emergency Stop, 2 Batteries, Easier to Use, Toy for Kids Adults Beginners, Black" to the cart because the product is out of stock.