Always try. Also for your wife - make plausible by e.g. sending the ticket of her as well that you travelled jointly. Maybe you have other proof you were at the places at the time of the flights. My experience with miles claims is that agents have a decent authority to decide - I sometimes even got 'commercial gestures' for a small inconvenience here and there and ended up having additional miles that I normally never could have claimed. If it is very clear to an agent your claim is very plausible and you are just a poor person surprised by getting a paper boarding pass only without any mailed boarding pass, they may decide to honor your loyalty instead of creating a slightly frustrated customer by strictly sticking to the formalities, while the chance on fraud is in their view < 1%.