[N_Force]

Look like your scope is okay.
Let's go back to the starting again. Seems like you may not notice the fine adjustment when you turn the nub.
Once you attach the scope , doesn't mean that the cross hair might align with the iron sights. Always a bit off. That's why you need to sight it in.
Lock or clamp your rifle with scope attached and keep it stay in one spot if possible. Set a piece of paper target with a cross sign in a short distance and aim the scope to the cross. Adjust the scope see if you see any change to find out if the scope is adjustable. hope it helps.
Remember , this is just a piece of toy, a piece of replica. If it is off too much, sometimes you have to do something on the rail to make it work.