Every time they ship out with UPS I receive my tracking number, and every time I check it I get this message: “We are unable to complete your tracking request at this time. Please try again later.” In these cases, the delivery is happening, the order always arrives, and the tracking number never updates or ends up working.
https://www.reddit.com/r/UPS/comments/ycc9b6/ups_tracking_numbers_consistently_not_working/

