icloud password says incorrect, but its not
I restored my ipad yesterday and when it restarted, it asked my password(apple ID) to activate icloud, but is says incorrect password. The password worked on my itunes and to log into my icloud on my computer just now. so i thought I'll reset my password and still its not working. please help!!! im not an IT specialist, and only know the basics, so this issue is driving me crazy because my books I have to study from is now not loading onto my ipad.