Just in case it's not clear - and also in case this isn't just a repost of something sent via official channels - nobody from tobponus, airberlin or Etihad monitors these threads, so nobody from any of these companies is likely to even read that, let alone reply to you.
When an airline fails it is customary for the miles to immediately disappear - so at least in the present case there was some attempt to allow customers to spend some miles before they truly become worthless. That said, the options for doing so are indeed not all that appealing.
As regards your two cancelled flights, and on the assumption that you booked both prior to August 15th, you should contact your credit card issuer to instigate a refund (and I hope you paid by credit card!).