My goal is to make a colored ribbon in Blender. I used an extruded bezier curve to model it, the use this short tutorial to put a flag color on it (https://www.youtube.com/watch?v=f9RDiG9a4Ao&ab_channel=CGMatter).

The problem is that when I link the image node on the map UV, the ribbon disappear and looks like that :

Instead of that (with some colors of the flag on it):

I used a Poliigon texture for the cloth texture, here is a picture of it (idk if it's useful) :

Here is a UV MAP screenshot :

Thanks a lot ! (I'm using blender 3.5)