Could not claim satoshi from Moonbitcoin with my iPad Mini

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Hi Mylot Friends, Yesterday I have tried to earn satoshis from Moonbitcoin site from my iPad mini, I could not claim the points to claim the points I have to fill the answer, but I am not getting the answer to claim my satoshis. So I have not tried with Zebrabit and Bitcoinker sites also in my iPad mini. Long back I have tried to claim the points through my smartphone then also I cannot claim the points. Can any one share your experience about this please.