Can you only buy from Flash Deals Once?

I know flash deals says one per user back in July. But does that mean once you buy anything from flash deals once, Flash deals will automatically cancel any future purchases you attempt to make? Please help me understand

One deal per day, I ask this on their twitter in the beginning and that what I was told, but to be honest, it gets real hard to get the offer u seek on the flash deals because now there many others getting the deals