GOT FINGERPRINT NOTICE LATE FROM USCIS?

i HAVE SENT MY AOS PACKAGE LAST MONTH AND THEN GOT THE ACCEPTANCE LETTER FROM USCIS AFTER ONE WEEK,BUT AFTER THAT THEY SENT ME THE RFE FOR MEDICAL EXAM AND I JUST DID THAT AND SENT.BUT TODAY I GOT FINGERPRINT MAIL IN MY MAILBOX TO HAVE GET FINGERPRINTED DATE THAT IS ALREADY PASSED AWAY.SO THIS IS THE USCIS WHO SENT THE MAIL LATE.SO WHAT TO DO NOW?