only one cup works

I only use the large cup in general and found that this cup only works when one particular cup hook is pressed into one particular part of the base. Why this is so I don't know. I rotated the cup around to hit all 3 of the base connectors which is how I found this out. So now I make sure to just put the cup on in the right spot on the base.

You may contact Nutribullet Customer Service Department at 855-346-8874 for assistance on using the product or warranty service. (Mon– Sun, 9am–8pm EST). You will be required to provide the barcode/serial number located underneath your Motor Base. Thank You!