為什麽在CIS網站上輸入receipt no 後找不到？

我的485等 都能找到， 最近新申請了一個I-765, 錯過了打指紋的時間，想看一下進度， 結果，
Validation Error(s)
You must correct the following error(s) before proceeding:
Case Status Retrieval Failed
This Receipt Number cannot be found at this time in this automated system. Please check your case receipt number to see if it is correct. If you have questions or concerns about your case status, please contact the National Customer Service Center.

怎麽辦？ 謝謝!