Based on the street page listing 13 nodes but a visual count only showing 11, I’d guess it’s a similar issue to one I had earlier this year. The tl;dr is that Mapbox updates faster/more frequently than the CityStrides street list, so while you can only see 11 nodes and you got them all, there are 2 more unattainable phantom nodes out there in purgatory until CityStrides updates. I’d mark it as manually complete for now and should resolve itself sometime this month, since the San Fran city page says it updated 4 weeks ago (cities update every ~6-8 weeks).