I wonder if old versions of the app will still work. Assuming the endpoints are not going to change. Also it seems that I can't find the app due to my search region. Can someone provide a link to the app?
You can find the links to their App on DWD Website German version[1] seems like they've already implemented the ban. The warnings are free, but you have to do an in-app purchase of 1.99 to see the forecasts, etc.