It's an exaggeration to say that Heidegger was full-fledged member of the Nazis, but his refusal to condemn them for so many decades is unforgivable. Definitely, what Heidegger got from Scheler is a mystery, and we'd be hard pressed to find much of Scheler's ideas in Heidegger. My sense is that for a whole generation or two of German-language philosophers, the terrain of inquiry that Scheler opened up was the influence. Scheler showed that one could talk about the individual in new ways without sliding into the cynicism of Nietzsche and others.