Home › Forums › SharewareOnSale Deals Discussion › Perfect PDF 10 Premium / Oct 3 2022 › Reply To: Perfect PDF 10 Premium / Oct 3 2022 Oct 3, 2022 at 9:54 am #20220504 Quote Tiny TennyGuest When I put in the key on the site- it says – “The product key CBSXXCUB is invalid, belongs to another product or has already been registered in the account.” So ??????