Welcome, If you need anything feel free to send a message 🖤
Hi Jay. This is probably happening because of slides
Sometimes the game cannot recognize the slides and leaves the cc in the default form.
If you want, I can fit them for you in blender.
You can try using the UV Editor, there using L or pressing C and painting the parts of the shoes, painting is easier as you will be selecting all the vertices.
I made a small video showing it, I'm uploading it to send it to you.
https://gifyu.com/image/S8ZCz
forgive the quality :c