Hack Flying not enabled on server please help?

Im using minecraft hack ive tried a couple result is always same and after flying for a while it says disconnected by server fly not enabled is there a fix for this?

No, it's a server mod that'll kick you for using fly hacking. So basically co-ordinates above where you should be for prolonged periods of time. In the past, I could do it for a limited time before I got kicked.