Top down rotation and translate 2d

Hi, i hope someone can help me with this, i'm very noob and trying to learn. I have the next code trying to get working rotation and movement, but something it's wrong. The sprite can't move to the left, right works, if i try to move it up or down it goes slightly to the left, if i remove the code for the rotation it can move without rotation, what i'm doing bad? what can i do to make it work with rotation and movement? Thank's in advance.

    Vector3 valorInput;
             valorInput.z = 0;
             valorInput.y = CrossPlatformInputManager.GetAxis("Vertical");
             valorInput.x = CrossPlatformInputManager.GetAxis("Horizontal");
             if (valorInput.x != 0 || valorInput.y != 0){
                 float angle = Mathf.Atan2(valorInput.y, valorInput.x) * Mathf.Rad2Deg; 
                 transform.rotation = Quaternion.Slerp(transform.rotation, Quaternion.AngleAxis(angle, Vector3.forward), Time.deltaTime * 30);
             }
             transform.Translate(valorInput * Time.deltaTime );