When you check in, you have to request again to be put on the airport upgrade list. This is different than your prior request. Maybe on the blackberry, you didn't see the option? Regardless, you should always check once at airport that on upgrade list. Finally, you have the same priority on the list (date of your original upgrade request -- usually when purchasing tix) so you didn't lose out.
With a 90% upgrade ratio as Gold, you certainly have nothing to complain about
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