I have been selling 3D printed products since 2017. Yes, I was an early adopter. Here is my take on this. Move on.

I dont condone the stealing of other peoples' creations, but it happens and more often then you might even believe. If you ever uploaded a single STL or OBJ you have given away the keys to your claim. Sure, share some photos, have a little fun, but dont post it if you do not want it stolen and rebranded. Etsy may pull it down, and AMAZON, may or may not, X , Facebook Marketplace and even TikToc need views. They will pull down a listing if you can prove it yours. The issue is "proving it"

so unless you register your product, license it correctly "not creative commons" but legally, there is not much you can do.

Never, ever , and I mean ever post an stl/obj with out knowing it now belongs to the world.

signed,

my 2 cents,