Changing Canvas & Grid Color ERROR

Hi, everyone.

I hope someone can help me. I used a component I found here at the forum to change canvas and grid colour. It is called change_gui. After I installed it, I lost the ability to zoom in the definitions. They just disappear like a video error. I reinstalled Rhino and Grasshopper, I uninstalled the component, nothing works.

Does anybody have a clue?

Thanks.