Mike survived - I’ve started today myself a nice conversation with a friendly Lady of the Haberstock company 
Most important: ATS drives can neither be repaired nor serviced in Germany!
The reason is simple: ATS drives are in fact previous, previous versions of the actual Schlumpf drive.
Spare parts do not match and can’t be exchanged.
The good news: Contrary to my speculation was the ATS company in Taiwan not closed - according to Haberstock support they will be back soon.