请教，去年UA发的Electronic Travel Certificate过期了还有救# Money - 海外理财
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去年父母登机被UA延误了，发了俩个100刀的Electronic Travel Certificate，
An Electronic Travel Certificate has been issued to XXXX (Mileage Plus )
valid towards the purchase of one electronic airline ticket, where eligible,
on United up to $100.00.
今年想起来是2/8过期了，请问还能要回来吗，另外这个是issue特定人的，有code和
pin，是不是只能这个人用？其他人有code和pin用得了吗，
谢谢
An Electronic Travel Certificate has been issued to XXXX (Mileage Plus )
valid towards the purchase of one electronic airline ticket, where eligible,
on United up to $100.00.
今年想起来是2/8过期了，请问还能要回来吗，另外这个是issue特定人的，有code和
pin，是不是只能这个人用？其他人有code和pin用得了吗，
谢谢
