After registering the drone with DJI, you will be asked whether you would like to purchase DJI Care Refresh for one or two years.
It is essential to register and purchase the Care Refresh package via the web browser (on a PC or Mac). https://www.dji.com Not via the DJI app, as it always specifies Germany as the home location.

Yes, everything is available

Apparently not yet, which is very incriminating because you have to buy the insurance in the same country as the drone.