Instant denial for chase freedom unlimited. Any bets on why before I get my letter?

I was instantly denied for the chase freedom unlimited card today and can’t see any reason why. I only have one line of credit but it is over 20 years old with over a 30k limit. Credit is at a 789 and 100% payment history never carrying a balance. No derogatory marks or anything. Does anyone have any insight or guesses as to why I was denied?