Hi, this is for a friend. She applied for Post completion OPT on Oct 18, 2019 and she received the EAD last week. The dates she requested were from Jan 15,2020, however, USCIS has changed the dates and put Dec 4 as the starting date. And also, her school's end date is Dec 15. Should she change the dates and return the EAD or keep it and start working on that EAD after 15 Dec, 2019, which is the end date of school.