I just looked at my account for the expiration of passes. One of the passes that I got in December 2019 was extended all the way to June 2021 (i assume the original expiration date is dec 2020?). One of the passes that I got in Jan 2020 still has Jan 2021 as expiration date.

Not sure which one to use right now as I don't fly often and afraid to use the wrong pass. If i use the Jan 2021 pass first and then UA extends that for everyone at a later time, I will most likely waste that June 2021 pass.

Decision, decision, decision.