She went to the cage to cash out her jackpot win. The customer, called Cynthia Obie, told news outlets that she was playing a slot machine when she won the jackpot. The jackpot was voided due to a staff member accidentally inputting the incorrect social security number. The casino has publicly apologized to the customer. The mistake voided a substantial slot machine jackpot. The MGM National Harbor casino in Maryland made quite an unfortunate mistake recently.