Walking on wall does not work in Joystick Controller??

I saw your work here and appreciate that you have done a wonderful job by hardcoding and using raycast to walk spider on any object. So, I wanted to work more on your project and added mobile joystick controls to it, But by using joystick controls, the spider does not walk on walls. Can you guide me with that??
My contact email is umrf5900@gmail.com.