Blindly adding surface information to roads that were traced from old imagery and don't exist on the ground is of no use. 

Make sure features exist before pressing buttons on StreetComplete to add tags into OpenStreetMap. There are many occurrences already. See one https://www.openstreetmap.org/way/627322219

Better to clean/fix these roads from a desktop editor such JOSM or iD before surveying them with StreetComplete.