Consider the table above ,  during Apply Certificate not approved ,  then the column  " State "  there are no words  " Normal ".  Wait several hours until it appears on the Normal writing the column  " State ".  At Normal status it appears ,  in the  " Operate "  will appear  4  links  ( Signing ,  Cer ,  key , Delete)  as in the picture above .  To  Download  the key ,  please click on  " Key "  that exists in the column "Operate  ".  And to  Download  the certificate ,  please click on  " Cer "  that existed in the  " Operate ".