估计你已经上车了？不过还是回一下，为了其他Qyer的方便也好。简单地说，和车站的售票员联系或者和检票员确认，转乘下一班车即可。SBB关于赶不上Supersaver车票上的车次有详细说明，关于你的情况看下文的最后一句“Where a train is cancelled....”即可。
I have missed the selected supersaver ticket connection for which I bought a supersaver ticket. Can I still use my supersaver on another connection?
If you have missed the booked connection or wish to travel at another time, you can purchase another ticket at the standard fare and have the supersaver ticket refunded after travelling. You must show the ticket collector the original supersaver ticket with a confirmation as well as the original ticket purchased at the standard fare. Only tickets for identical routes may be refunded. The refund can be processed at points of sale with electronic sales machines and access to the customer’s file. A reduced surcharge of CHF 10 will be applied for refunds as per T600.9. Where a train is cancelled or delayed or a route is closed, you may use the next connection with confirmation from the ticket inspector or sales agent.