Have you had one motor moving properly with any other code?
If not try this Simple Stepper Code which does not need any library. Get the motor working with simple code before trying anything more complex.
If you need more help then ...
- post a link to the datasheet for your stepper motor
- tell us what stepper motor driver you are using
- tell us what stepper motor power supply you are using (volts and amps).
...R
Stepper Motor Basics