maaaaay

Just an update on my case, 
I filed in March 2021 and had my interview last week. The interview went smoothly and after answering the 6 questions, the interviewer told me that I have passed and then moved to the YES/NO questions. He added some travel updates, but his system was so slow that it took 40 minutes to do that. In the end, he congratulated me and said he wants to give me a date for the oath ceremony but he couldn't because of his system. We waited 10 minutes, but it didn't happen. He gave me a congratulation and approval letter and said a letter with the oath date will be mailed to me. 
However, on Monday my case was updated three times from "in the list for oath" to "case was submitted for quality review based on an approval". I have no clue what to do next. 

@SavvaCongratulations! Best of luck to you. That's awesome.

@LynetteMNThank you, I hope you hear back from them soon. 
I have the USCIS app installed on my phone and I used to check it everyday. 2 days before receiving it through mail, I got the notification that it was approved.