CleverShuttle informed:
Unfortunately we have to inform you that CleverShuttle is no longer available in Berlin as of today.
The decision was not easy for us, but under the current circumstances an economical operation is not possible. We would like to thank you and hope to see you again sometime.
Operations in Düsseldorf, Kiel and Leipzig will continue normally. So if you still have credit, you can of course use it for trips to these locations.