I called  help and proseries does cut off e-filing. My fiscal year ends the following year on April 30th. I was switching software to Lacerte for 2022, but they would not let me e-file a 2021 return even though my extended due date for my 2021 return was March 15, 2023. Plus I didn't want to file in 2022 software since that would have the wrong year. It seems crazy they have a cut off, but they confirmed that they do, so I had to get Lacerte prior year copies and completely redo the return. Just a heads up to anyone else with a weird year end.