Fake news:
Update according to German news:
The respirators ordered by the Berlin police have not been secured by the United States, but simply bought at a better price - by whom exactly is still unclear. A spokeswoman for the police said on Saturday on request. The authority is correcting the information provided by Interior Senator Andreas Geisel (SPD).
I think you have a basic misunderstanding of what fake news is. The Germans may have been mistaken about what actually happened but they definitely accused the USA of stealing their respirators. Even the article you posted says as much.