https://www.themarker.com/consumer/tourism/1.4478900Didn't find English version of the story.
Seems like an Israeli person redeemed a DL award on Aeroflot metal from TLV to BKK.
He was denied boarding at the airport, because DL voided the ticket.
Initially it was reported that he paid the YQ with someone else's CC, but later on it seems like he used his own CC but a friend's sky
milespesos account, but failed to show his friend's ID at check in time.
Judge ruled against DL, saying that T&C of the ticket didn't state that he had to produce the Skymiles account holder ID at check in, or any other such limitation, and that if DL had a problem, they should have notified passenger in advance, and not wait for check-in time.