Originally Posted by
anteater
It’s purely speculation, but you may have simply been unlucky in the timing where it was available, but by the time the ticket was purchased it was no longer available.
One would assume that a good system would hold X U spaces for a ticket once the pax hits purchase; however I doubt AS IT is that well implemented.
You could always try CC, but I don’t think they would be able to open U space for you.
If you’d like, I can setup an EF alert for your flight. DM me.
Thanks for the offer. I have an EF account and will do just that. This just seems highly suspicious with the exact timing of all U space disappearing at exactly the same time I made the purchase. What makes me think it's a system issue, further supporting your AS IT comment, is that there was no available upgrade space for Premium. It seems to me the U space for the day was truly phantom availability.