We do not take AirBerlin claims anymore but you can register for infos https://www.claimflights.co.uk/airlines/air-berlin and we inform you if we get money and tell you details.
AirBerlin has declared bankcruptcy but we will register your claim with the liquidator (law office Lucas Flöther in Berlin) and there is a chance that you will get at least a percentage of your claim. More infos here https://www.airberlin.com/en/site/landingpages/flight_information.php
The claim process can take much longer but we will do our best to follow up in your interest.
Do not worry, there is no action required from your side and we will come back to you and tell you what the liquidator told us about your case.
Claim Flights GmbH