I’m not familiar with what stage this is in course but the wings look like they are working correctly.
Although, from the images I can see that there is some parenting that leads to the root bone (which should be the way that it works), however, in the file nothing is parented to the root bone.
Did you accidentally clear this? If so, just make sure the root of each relevant section is parented to the Root bone.
But other than that it is looking correct.
