Check the mounting. Believe it or not I once picked up a bow (in a shop) whose red dot was on BACKWARDS! If you're shooting high the scope has to come up (not down). That makes the rail of the bow come down, along with the arrow. The red dot should be centered or close to it. First center the dot, making sure the mount is on properly and the dial a range properly assembled. (They are nothing but trouble, some folks just bolt them in one position). They shoot from 10 yards. If it shoots high and you can't adjust the dot down far enough, the front of the red dot scope hs to elevated.