The following problems were found:

• You cannot add "F7 GPS Drones with Camera for Adults 4K Night Vision, 3-Axis Gimbal, 2Mile Long Range, 75Mins Flight Time Professional Drone with 3 Battery, Auto Return+Follow Me+Fly Around+Beginner Mode for Kid" to the cart because the product is out of stock.
• You cannot add "Group 51R Car Battery Replacement (MT-51R) 12V, 500 CCA, 24 Month Warranty, Replacement Automotive Battery for Cars, Suvs" to the cart because the product is out of stock.