In the "Note about Battle Map Scale" file, it states that the art is 20' with a single subdivision and that each Roll20 square is 5', but that's clearly wrong. The grid over the scale box is showing each square as being 10'. It appears that all the tokens have ended up being effectively 10' instead of 5' etc making the scale completely wrong. In theory this is fixable, but it'll take a long time to manually resize every token already on the map.