hi I got this error appering "e_lic_already_fulfilled_by_another_user" I bought it here http://goodfellowpublishers.com/academic-publishing.php?content=home and this is the invoice number 80f93a10035241cacee5428ef910fb1d. I bought it without an ID in Adobe editions and I downloaded it in my dad's account. Now I am t university and can't open the file as that error comes up. Please help me I have an exam on Wednesday and need to revise all that book
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