Actually you are both wrong, since the Balkenkreuz and the Eiserne Kreuz are but two of hundreds of variations of the same symbol, the black cross of the German Order of knights, dating back to the 12th century. It’s the same symbol.
And not only that, the particular variation you are going on about, the Balkenkreuz, black cross with a thick white and small black outline except for the endings of the cross, isn’t a Nazi symbol. It was used in the first world war already.
Which is all completely ignoring that it’s a simple cross with a single outline, one of the most basic shapes there is, used by a medical company.
All to say, I see how it’s easy to mistake, but you are wrong on the facts and you are airing your grievances on the wrong venue. Write to the company, maybe they will even agree with you and change it.
Neither really, it’s a font thing. I see a wooden wheel in the page title, a car wheel in my tab bar, and it’s missing in the window title.