First i download Probuilder lite version to test.
With it I design a lot of beutifull things for my game, for example I design a building like the "Mezquita de Cordoba" (the spanish Cordoba Mosque & Cathedral) I was very happy with this design. I think: "if i can design so beautifull things with the free version of probuilder, what can i design with the advanced version?"
Then i decide to upgrade.
I buy the Probuilder Advanced and later when i go to my game to use the gameobjects i design with Probuilder basic, i discover that all of them was now without any material. I lost all the colors i get in my beautifull temple. Then i think i can modify to add again the materials, but each time i try to drag and drop any material to any gameobject design with Probuilder Basic, i get the same result, the material disapear. I can't get back the beautifull colors to my design.