我父母去年９月來美探親，B２簽證今年３月初過期。我今年２月幫他們申請B２延期，後來由於疫情，到７月底才打了指紋, 然後我父母於８月底回國了。大概１１月多的時候又收到信，又讓我父親１２月１０號去打指紋，我當時還覺得奇怪，心想早就打過指紋了，而且人都回國了，就沒管它。結果今天又收到信，說我父親的延期申請被拒絕了，理由是７月底那次打的指紋不合格，讓他１２月１０號再去打指紋，他沒去。還說記錄顯示他８月底已經離境。說＂you failed to appear for the scheduled biometric services appointment. Additionally, there is no evidence in the record to indicate that, prior to the appointment time, USCIS received a change of address or rescheduling request justifying your failure to appear. Therefore, your application is considered abandoned and USCIS denies your request＂。 請問，我該怎麽辦？
另外，我母親的延期前幾天批準了。他們同時７月底打指紋，結果我母親指紋合格，我父親的指紋不"satisfactory", 造成後麵這一係列後果。
