Why is Unity UI Canvas Button not working?

Question

This is the hierarchy for the app I'am trying to build. You can see that I have the button for the Main UI

This is how the inspector of the Main UI looks like

This is how the UI Canvas inspector looks like

This is the inspector the **Interaction Controller

This is my EventSystem. It looks like this because I am using the new InputSystem.

I want the Main UI Button to load the next UI which is the Select Model UI but when after building it to my device, nothing happens when I click on the button. I need help understanding what is the issue.