加航网站是这么说的：You must be authenticated to access the following functions. Enter the credit card used to make the original booking on aircanada.com. Credit Card Number (for authentication purposes only)。 我输入我给你的卡号但不对。希望到时网上checkin 的时候不会再有这麻烦。Anyway, 谢谢你帮忙更改。