Clickbank sales cutoff ?

Can somebody explain me how is this possible ? Between 8th and 14th January I earned 109$. Then, after the 14th till now it was only one sale for 37$. The amount of hops was almost the same during both periods - all the time 30-35 hops per day (0.40$ per 1 hop between 8th and 14th and 0.08$ now ... thats the difference ). I can even say that after the 14th it's a little bit more. How is that possible that my earnings are lower by 80% ? Just bad luck? Im starting to think that clickbank is kinda stealing the money...

Same thing with me at the moment with the same time period. It's slightly concerning but it could always be bad luck. I've checked my traffic sources and nothing has particularly changed on that end.