Need more time for class upgrades – SBB Mobile Review

The newest version refuses to let you buy any ticket as soon as the train is scheduled to leave (even if the train is late). This is particularly annoying with class upgrades. There are many mornings it takes a few minutes to realize there are no seats in 2nd class. I would happily pay to upgrade my to first class, but the app won't let you as of the second the train is SCHEDULED to depart. There is no accounting for late trains and no grace periods for class upgrades. Please let me give you my money! More money for SBB and no more journeys spent miserable (and hot) standing in 2nd class.
Review by SwissAir is the Worst on SBB Mobile.