NCraves not working past first video

Craves are not working for me. I clicked Daily Crave from the to-do list and can't complete it. After I let the first video pay (it's usually about 12 seconds long), it disappears to be replaced by nothing and the second countdown is stuck at 1:00. I've tried doing a crave from the watch page (and on two different computers), but it's the same. Anyone else having this issue?