Update - I today went from ‘your case is taking longer than estimated but still within processing time’ to Estimated time to case decision 5 months!!. In the USCIS Notices my Biometrics appt notice which I attended back in September is also missing. So I have gone from applying 7 months ago and Denver office running at 80% complete within 7.5 months to another 5 months to case decision. Who knows why, because of course can’t ask a question until late June!, Frustrated.