OK, Can you just confirm if you have the brakes on or maybe the prop pitch is in coarse position and not fine.
Does the engine rev up ok?
It sounds to me if you are not even getting the engine to Rev up that the throttle isn't mapped correctly.
What sort of joystick do you have? i wondered why you are using a slider ,don't most joysticks have a throttle lever?
The more information you can post the easier it will be to help you?
Good luck,we will try and get you up and flying as quickly as possible