Apparently, that's not allowed? Ludicrous!
1) I've bought a ticket
2) It's a valid ticket for this train
3) It's not like I'm trying to get out of paying
4) The "download + activate" part of the app is... frankly a bit weird
5) Have I said I've bought the ticket already?
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7) Why not just download it when I buy it?
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9) If you want me to remember to download it beforehand, PUT GATES UP AT EUSTON (!!!)
10) Stop blaming customers for your poor UX
...
It's *not my fault* if your app is poorly designed.
You should not blame me if I use it in what seems a reasonable way.