any thoughts why i was deferred?

hello i applied ed1 and my main choice was shanghai campus. However i got deferred to ed2. I updated my personal statement and added some decent achievements 3 weeks after deadline. Can it be the reason why i was deferred, like they couldn’t check my profile again with new updates so they decided to defer to fully read again?

1560 sat, 5.0/5.0 gpa, 7.0 ielts and founder of ai local governor funded startup, autism-supporting fund, internship in german kindergarten and some regional plus national hackathons. Essays were pretty decent after update. Any thoughts?