Cant put my own saved designs from my catalog on my cars

Please help. Every time i try to add my own created designs that i saved to my catalog to my car it just sits on the saving screen until i decide to sign out because it never loads.

Without knowing what you are doing, after you get your designs on your car how you want them are you pressing the “start” button selecting " save to car " Then pressing the "start " button again and then selecting " save to design catalog " so that you save the paint both on the car as well as in your designs?

so I try and put my car in design catalogue and it just comes private. How do I put it private. its getting frustrating