护照不可以当身份验证,德铁回复到:You must specify the personal data of the passenger. The identification for the online ticket must belong to the traveller personally. According to the terms and conditions for online tickets atwww.bahn.com the traveller must show the mentioned Online Ticket ID-Card at the control on the train. As an authorized ID: BahnCard, credit card, German debit card and identity card. Only identity cards from following countries are currently allowed: Germany, Austria, Switzerland, France, Netherlands, Belgium, Luxemburg and Italy. A virtual credit card or passports are not accepted. If you do not have one of this ID-card you can not book an Online-Ticket. Please choose the option "postal delivery ticket". For tickets, which are delivered by mail, no information on the identification are required. You can send the tickets to any address. It will be charged a shipping fee of 3.50 EUR. Delivery time to addresses in Germany is at least 2 to 3 working days. Time of delivery to addresses abroad is at least eight working days. Full details of delivery times in the various countries we do not know. We recommend early reservation so that the tickets arrive on time by mail.
其次, 出票以后是不可以更改身份认证用信用卡信息的, 如果想改, 只能退票, 再重新买
你核查一下当时注册时填的什么,非德国长居一般都用的信用卡注册
支付的卡无所谓滴。