If your shade is traveling up when you press down or down when you press up you may need to change the direction. Should you need to see how to reverse the direction of your motor, please see below.
How to Reverse Shade/Blind Direction
During the initial setup:

If the motors Limits has already been set you can ONLY reverse direction from the P1 Button on the Motor.
You can do this by pressing the P1 button on the motor for 3 total jogs