Grayed-out Surfaces

Hi, most of my surfaces went gray on one side. They are not “reversed”.

I cannot alter these surfaces with texture or color. Everything was fine until I imported a 3D potted plant so I am not sure if that is the issue but I got rid of it and it did not fix the issue.

Please don’t double post. Two of us have responded in your first thread but you didn’t come back to it.