I did not find a single ad on persianptc today

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I have joined Persianptc just yesterday or the day before. Yesterday i found only one ad to click. Today when i logged in to click ads i found there is not a single ad. I was disappointed a bit. Because i only earned $0.01 from that site. It was over 28 hours till i logged in again. But nothing was there. I wan to know that did the same happened to you or it is only me?