Originally Posted by
kauppias
"This promotion is only open to Eligible Participants. An Eligible Participant is a customer, resident in Germany, aged 18 or older, who holds a valid airberlin topbonus Silver, Gold or Platinum card.
Eligible Participants must apply between the 17 October and 30 November 2017."
That's indeed what it says, but I tried asking anyway (I'm based in Malaysia) yesterday. Got an email today - impressively fast response - saying they have matched my Topbonus Gold to a BA Executive Bronze.