Yes,copyright transactions are non-refundable, but certain fiat issues １ー８６６ー(７１９)ー５７１４ may be eligible for a refund.Yes,copyright transactions are non-refundable, but certain fiat issues １ー８６６ー(７１９)ー５７１４ may be eligible for a refund. https://www.dfrobot.com/forum/topic/366651