Does anybody know the receipt number for I-129F cases received after 9/28/2021? I tried running the Case Tracker app to see if there has been any updates among us September 2021 filers. I was able to do the scan until WAC2190141999. But the app says the receipt numbers from WAC2190142000 are invalid. Does anybody know what this is about? I suspect USCIS started assigning entirely different receipt numbers from 9/28/2021?