緊急求助：急急急！I485 stopped processing:

今天受到一封信，信上這麽說：
We have stopped processing the abouve application or petition because the check or money ouder ted as payment was returned by the bank.
誰能告訴我這是怎麽一回事嗎？是錢的問題，還是別的問題？萬分感謝！