Character not moving with WASD

So I bought a animated m4a1 of the marketplace, it came with controls, and arms for FPS shooter. It uses “Stick input” in the blueprint- does this mean gamepad controls. So, the player worked fine, until recently it just stopped moving-unless I press space- which makes it drift diagonally to the left slightly and then it stops. I can also turn my character with left and right arrow keys but thats it.