I use an US address, but they want me to provide a living certification.
Dear Mr. X,
thank you for your E-Mail and your status match request.
Send us a official certificate ( ID card or passport or residents' Registration Certificate with official stamp) of your place of residence in USA with imprint your correct and complete residential address.
Customers residing in the United States must demonstrate a booking confirmation incl. Booking Number of airberlin long-haul flight between US and Europe (there and back). This flight has to be operated by airberlin and carried out in the year 2016/2017/2018. The right to make alterations is reserved to topbonus Ltd., and may be carried out and/or be withdrawn at any time without giving prior notice.
on December 28, 2016