Re: Obvious Mistake?
No, more like they took a conscious decision to ensure customers could use their tickets rather than hammer their servers in the mornings causing them to lose actual money by having drivers wave people onto the bus rather that have them fuming and cursing the app because the servers' have fallen over (again).
Having a few miscreants get some free rides is much better than thousands of free rides every week because of server timeouts during peak hours, or paying for suitable elastic hosting to cope.